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Essays on Climate Change

Climate change: essay topics for college students.

Welcome to our resource page designed for college students seeking inspiration for their climate change essays. The choice of topic is a crucial first step in the writing process, reflecting your personal interests and creativity. This page aims to guide you through selecting a compelling essay topic that not only captivates your interest but also challenges you to think critically and analytically.

Depending on your assignment requirements or personal preference, essays can be categorized into several types. Below, you will find a variety of climate change essay topics categorized by essay type. Each topic is accompanied by an introductory paragraph example, highlighting a clear thesis statement, and a conclusion paragraph example that summarizes the essay's main points and reiterates the thesis.

Argumentative Essays

Topic: The Effectiveness of International Agreements in Combating Climate Change
Thesis Statement: International agreements, though crucial, are not sufficiently effective in combating climate change without enforceable commitments.

Conclusion Example: In summarizing, international agreements provide a framework for climate action but lack the enforcement necessary for real change. To combat climate change effectively, these agreements must be accompanied by binding commitments that ensure countries adhere to their promises, underscoring the need for a more robust global enforcement mechanism.

Compare and Contrast Essays

Topic: Renewable Energy Sources vs. Fossil Fuels: A Comparative Analysis
Thesis Statement: Renewable energy sources, despite higher initial costs, are more environmentally sustainable and cost-effective in the long run compared to fossil fuels.

Conclusion Example: Through this comparative analysis, it is clear that renewable energy sources offer a more sustainable and cost-effective solution to powering our world than fossil fuels. Embracing renewables not only mitigates the impact of climate change but also secures a sustainable energy future.

Descriptive Essays

Topic: The Impact of Climate Change on Coral Reefs
Thesis Statement: Climate change poses a severe threat to coral reefs, leading to bleaching events, habitat loss, and a decline in marine biodiversity.

Conclusion Example: The devastation of coral reefs is a stark reminder of the broader impacts of climate change on marine ecosystems. Protecting these vital habitats requires immediate action to mitigate the effects of climate change and preserve marine biodiversity for future generations.

Persuasive Essays

Topic: The Role of Individual Actions in Mitigating Climate Change
Thesis Statement: Individual actions, when collectively embraced, can drive significant environmental change and are essential in the fight against climate change.

Conclusion Example: In conclusion, the cumulative effect of individual actions can make a substantial difference in addressing climate change. By adopting more sustainable lifestyles, individuals can contribute to a larger movement towards environmental stewardship and climate action.

Narrative Essays

Topic: A Personal Journey Towards Sustainable Living
Thesis Statement: Through personal commitment to sustainable living, individuals can contribute meaningfully to mitigating climate change while discovering the intrinsic rewards of a simpler, more purposeful lifestyle.

Conclusion Example: This journey towards sustainable living has not only contributed to climate action but has also offered a deeper appreciation for the importance of individual choices. As more people embark on similar journeys, the collective impact on our planet can be transformative.

We encourage you to select a topic that resonates with your personal interests and academic goals. Dive deep into your chosen subject, employ critical thinking, and let your creativity flow as you explore different perspectives and solutions to climate change. Remember, the best essays are not only informative but also engaging and thought-provoking.

Writing on these topics will not only enhance your understanding of climate change and its implications but also develop your skills in research, critical thinking, persuasive writing, and narrative storytelling. Each essay type offers a unique opportunity to explore different facets of the climate crisis, encouraging you to engage with the material in a meaningful way.

Hooks for Climate Change Essay

Climate change is not just an environmental issue; it is a pressing global crisis that affects every aspect of our lives. From melting polar ice caps to rising sea levels, the signs of climate change are everywhere, and they are impossible to ignore.

Imagine a world where natural disasters are a daily occurrence. This is not a dystopian future; it is the reality we face if we do not address climate change now.
Have you ever wondered why the summers seem hotter and the winters milder? The answer lies in the alarming acceleration of climate change.
Picture your favorite coastal city submerged under water. This scenario is closer than you think due to the rapid rise in sea levels.
What if I told you that climate change could lead to the extinction of over one million species by 2050? The clock is ticking for our planet's biodiversity.
Every time you turn on a light or drive your car, you contribute to a global problem. Understanding the personal impact of climate change is the first step towards meaningful action.

Climate Change Outline Essay Examples

Example 1: causes and effects of climate change, introduction.

Introduce the topic of climate change, its significance, and provide a thesis statement outlining the main points.

Greenhouse Gas Emissions

Deforestation

Industrial Activities

Urbanization

Rising Sea Levels

Extreme Weather Events

Loss of Biodiversity

Impact on Human Health

Renewable Energy Sources

Afforestation and Reforestation

Policy and Legislation

Public Awareness and Education

Summarize the main points, restate the significance of addressing climate change, and provide a call to action for individuals and policymakers.

Example 2: The Impact of Climate Change on Global Ecosystems

Introduce the importance of ecosystems and how they are threatened by climate change. Provide a thesis statement outlining the main areas of focus.

Coral Bleaching

Ocean Acidification

Disruption of Marine Food Chains

Forest Degradation

Changes in Wildlife Migration Patterns

Alteration of Plant Growth Cycles

Glacial Melt and Reduced Snowpack

Changes in Water Quality

Disruption of Aquatic Species Habitats

Summarize the impacts of climate change on different ecosystems, emphasize the interconnectedness of these systems, and highlight the need for comprehensive conservation efforts.

Example 3: The Role of Policy in Combating Climate Change

Introduce the role of policy in addressing climate change, and provide a thesis statement highlighting the importance of governmental and international efforts.

Renewable Energy Incentives

Carbon Pricing

Regulations on Emissions

Paris Agreement

Kyoto Protocol

UN Climate Change Conferences (COP)

Economic and Political Barriers

Technological Innovations

Public and Private Sector Collaboration

Summarize the role of policy in combating climate change, discuss the need for robust and enforceable policies, and call for increased global cooperation and commitment.

Climate Change and Global Cooperation

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Climate Change Solutions: Navigating Toward a Sustainable Future

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How Global Warming Changed Earth's Environment

Analysis of the possible causes of climate change, climate change as a serious threat, global warming and what people can do to save earth, get a personalized essay in under 3 hours.

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Mother Nature and Climate Change: We Must Take Action

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Climate change refers to long-term changes in the Earth's climate, including rising temperatures, shifting weather patterns, and more severe natural disasters.

The historical context of climate change spans centuries. The Industrial Revolution in the 18th century marked increased fossil fuel use, releasing significant greenhouse gases. By the late 19th century, scientists like Svante Arrhenius linked carbon dioxide to Earth's temperature. Climate change gained attention in the mid-20th century, with the 1958 Keeling Curve showing rising CO2 levels. Key events include the 1988 establishment of the IPCC, the 1992 UNFCCC, the 1997 Kyoto Protocol, and the 2015 Paris Agreement.

Greenhouse gas emissions: The burning of fossil fuels, such as coal, oil, and natural gas, releases carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) into the atmosphere, trapping heat and contributing to global warming.
Industrial activities: Industrial processes, including manufacturing, construction, and chemical production, release CO2 and other greenhouse gases through energy consumption and the use of certain chemicals.
Agricultural practices: Livestock farming produces methane through enteric fermentation and manure management, while the use of synthetic fertilizers releases nitrous oxide.
Land use changes: Converting land for agriculture, urban development, or other purposes alters natural ecosystems and contributes to the release of CO2 and other greenhouse gases.
Waste management: Improper handling and decomposition of organic waste in landfills produce methane, a potent greenhouse gas.
Rising temperatures: Global warming leads to increased average temperatures worldwide, resulting in heatwaves, melting glaciers and polar ice, and rising sea levels.
Extreme weather events: Climate change intensifies extreme weather events such as hurricanes, droughts, floods, and wildfires, leading to devastating impacts on ecosystems, communities, and infrastructure.
Disruption of ecosystems: Changes in temperature and precipitation patterns disrupt ecosystems, affecting biodiversity, migration patterns, and the survival of plant and animal species.
Health impacts: Climate change contributes to the spread of diseases, heat-related illnesses, and respiratory problems due to increased air pollution and the expansion of disease vectors.
Water scarcity: Changing climate patterns can alter rainfall patterns, causing water scarcity in certain regions, affecting agriculture, drinking water supplies, and ecosystems that depend on water sources.

Transitioning to renewable energy sources like solar, wind, and hydropower, along with improving energy efficiency in industries and buildings, can significantly reduce greenhouse gas emissions. Promoting electric vehicles, public transportation, and biking infrastructure further cuts emissions. Forest conservation and reforestation help absorb carbon dioxide, while sustainable agriculture practices reduce emissions and improve soil health. Embracing a circular economy reduces waste, and strong climate policies alongside public awareness drive collective action against climate change.

The levels of carbon dioxide (CO2) in the Earth's atmosphere are currently higher than any recorded in the past 800,000 years. According to data from ice core samples, pre-industrial CO2 levels averaged around 280 parts per million (ppm), while current levels have exceeded 410 ppm.
The Earth's average temperature has increased by about 1 degree Celsius since the late 19th century.
The Arctic region is warming at a faster pace than any other part of the planet.
Human activities, such as burning fossil fuels and deforestation, are major contributors to climate change.
Climate change is also affecting wildlife, with many species facing extinction due to habitat loss.

Climate change is a critical issue that affects all aspects of our lives, from the environment to the economy. It poses a threat to biodiversity, food security, and human health. Addressing climate change requires global cooperation and immediate action to reduce greenhouse gas emissions and mitigate its impacts. By raising awareness and taking steps to combat climate change, we can protect the planet for future generations.

1. Intergovernmental Panel on Climate Change. (2018). Global warming of 1.5°C. Retrieved from https://www.ipcc.ch/sr15/ 2. National Aeronautics and Space Administration. (n.d.). Climate change: How do we know? Retrieved from https://climate.nasa.gov/evidence/ 3. United Nations Framework Convention on Climate Change. (2015). Paris Agreement. Retrieved from https://unfccc.int/process-and-meetings/the-paris-agreement/the-paris-agreement 4. World Health Organization. (2018). Climate change and health. Retrieved from https://www.who.int/news-room/fact-sheets/detail/climate-change-and-health 5. Environmental Protection Agency. (2021). Climate change indicators: Atmospheric concentrations of greenhouse gases. Retrieved from https://www.epa.gov/climate-indicators/greenhouse-gases 6. United Nations Environment Programme. (2020). Emissions gap report 2020. Retrieved from https://www.unep.org/emissions-gap-report-2020 7. Stern, N. (2007). The economics of climate change: The Stern Review. Cambridge University Press. 8. Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services. (2019). Summary for policymakers of the global assessment report on biodiversity and ecosystem services. Retrieved from https://ipbes.net/sites/default/files/2020-02/ipbes_global_assessment_report_summary_for_policymakers_en.pdf 9. World Meteorological Organization. (2021). State of the global climate 2020. Retrieved from https://library.wmo.int/doc_num.php?explnum_id=10739 10. Cook, J., Oreskes, N., Doran, P. T., Anderegg, W. R., Verheggen, B., Maibach, E. W., ... & Nuccitelli, D. (2016). Consensus on consensus: A synthesis of consensus estimates on human-caused global warming. Environmental Research Letters, 11(4), 048002. doi:10.1088/1748-9326/11/4/048002

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Global Warming
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Climate Change Essay for Students and Children

500+ words climate change essay.

Climate change refers to the change in the environmental conditions of the earth. This happens due to many internal and external factors. The climatic change has become a global concern over the last few decades. Besides, these climatic changes affect life on the earth in various ways. These climatic changes are having various impacts on the ecosystem and ecology. Due to these changes, a number of species of plants and animals have gone extinct.

When Did it Start?

The climate started changing a long time ago due to human activities but we came to know about it in the last century. During the last century, we started noticing the climatic change and its effect on human life. We started researching on climate change and came to know that the earth temperature is rising due to a phenomenon called the greenhouse effect. The warming up of earth surface causes many ozone depletion, affect our agriculture , water supply, transportation, and several other problems.

Reason Of Climate Change

Although there are hundreds of reason for the climatic change we are only going to discuss the natural and manmade (human) reasons.

Get the huge list of more than 500 Essay Topics and Ideas

Natural Reasons

These include volcanic eruption , solar radiation, tectonic plate movement, orbital variations. Due to these activities, the geographical condition of an area become quite harmful for life to survive. Also, these activities raise the temperature of the earth to a great extent causing an imbalance in nature.

Human Reasons

Man due to his need and greed has done many activities that not only harm the environment but himself too. Many plant and animal species go extinct due to human activity. Human activities that harm the climate include deforestation, using fossil fuel , industrial waste , a different type of pollution and many more. All these things damage the climate and ecosystem very badly. And many species of animals and birds got extinct or on a verge of extinction due to hunting.

Effects Of Climatic Change

These climatic changes have a negative impact on the environment. The ocean level is rising, glaciers are melting, CO2 in the air is increasing, forest and wildlife are declining, and water life is also getting disturbed due to climatic changes. Apart from that, it is calculated that if this change keeps on going then many species of plants and animals will get extinct. And there will be a heavy loss to the environment.

What will be Future?

If we do not do anything and things continue to go on like right now then a day in future will come when humans will become extinct from the surface of the earth. But instead of neglecting these problems we start acting on then we can save the earth and our future.

Although humans mistake has caused great damage to the climate and ecosystem. But, it is not late to start again and try to undo what we have done until now to damage the environment. And if every human start contributing to the environment then we can be sure of our existence in the future.

{ “@context”: “https://schema.org”, “@type”: “FAQPage”, “mainEntity”: [ { “@type”: “Question”, “name”: “What is climate change and how it affects humans?”, “acceptedAnswer”: { “@type”: “Answer”, “text”: “Climate change is a phenomenon that happens because of human and natural reasons. And it is one of the most serious problems that not only affect the environment but also human beings. It affects human in several ways but in simple language, we can say that it causes many diseases and disasters that destroy life on earth.” } }, { “@type”: “Question”, “name”: “Can we stop these climatic changes?”, “acceptedAnswer”: { “@type”: “Answer”, “text”: “Yes, we can stop these climatic changes but for that, every one of us has to come forward and has to adapt ways that can reduce and control our bad habits that affect the environment. We have to the initiative and make everyone aware of the climatic changes.” } } ] }

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Our Future Is Now - A Climate Change Essay by Francesca Minicozzi, '21

Francesca Minicozzi (class of 2021) is a Writing/Biology major who plans to study medicine after graduation. She wrote this essay on climate change for WR 355/Travel Writing, which she took while studying abroad in Newcastle in spring 2020. Although the coronavirus pandemic curtailed Francesca’s time abroad, her months in Newcastle prompted her to learn more about climate change. Terre Ryan Associate Professor, Writing Department

Our Future Is Now

By Francesca Minicozzi, '21 Writing and Biology Major

“If you don’t mind me asking, how is the United States preparing for climate change?” my flat mate, Zac, asked me back in March, when we were both still in Newcastle. He and I were accustomed to asking each other about the differences between our home countries; he came from Cambridge, while I originated in Long Island, New York. This was one of our numerous conversations about issues that impact our generation, which we usually discussed while cooking dinner in our communal kitchen. In the moment of our conversation, I did not have as strong an answer for him as I would have liked. Instead, I informed him of the few changes I had witnessed within my home state of New York.

Zac’s response was consistent with his normal, diplomatic self. “I have been following the BBC news in terms of the climate crisis for the past few years. The U.K. has been working hard to transition to renewable energy sources. Similar to the United States, here in the United Kingdom we have converted over to solar panels too. My home does not have solar panels, but a lot of our neighbors have switched to solar energy in the past few years.”

“Our two countries are similar, yet so different,” I thought. Our conversation continued as we prepared our meals, with topics ranging from climate change to the upcoming presidential election to Britain’s exit from the European Union. However, I could not shake the fact that I knew so little about a topic so crucial to my generation.

After I abruptly returned home from the United Kingdom because of the global pandemic, my conversation with my flat mate lingered in my mind. Before the coronavirus surpassed climate change headlines, I had seen the number of internet postings regarding protests to protect the planet dramatically increase. Yet the idea of our planet becoming barren and unlivable in a not-so-distant future had previously upset me to the point where a part of me refused to deal with it. After I returned from studying abroad, I decided to educate myself on the climate crisis.

My quest for climate change knowledge required a thorough understanding of the difference between “climate change” and “global warming.” Climate change is defined as “a pattern of change affecting global or regional climate,” based on “average temperature and rainfall measurements” as well as the frequency of extreme weather events. 1 These varied temperature and weather events link back to both natural incidents and human activity. 2 Likewise, the term global warming was coined “to describe climate change caused by humans.” 3 Not only that, but global warming is most recently attributed to an increase in “global average temperature,” mainly due to greenhouse gas emissions produced by humans. 4

I next questioned why the term “climate change” seemed to take over the term “global warming” in the United States. According to Frank Luntz, a leading Republican consultant, the term “global warming” functions as a rather intimidating phrase. During George W. Bush’s first presidential term, Luntz argued in favor of using the less daunting phrase “climate change” in an attempt to overcome the environmental battle amongst Democrats and Republicans. 5 Since President Bush’s term, Luntz remains just one political consultant out of many politicians who has recognized the need to address climate change. In an article from 2019, Luntz proclaimed that political parties aside, the climate crisis affects everyone. Luntz argued that politicians should steer clear of trying to communicate “the complicated science of climate change,” and instead engage voters by explaining how climate change personally impacts citizens with natural disasters such as hurricanes, tornadoes, and forest fires. 6 He even suggested that a shift away from words like “sustainability” would gear Americans towards what they really want: a “cleaner, safer, healthier” environment. 7

The idea of a cleaner and heathier environment remains easier said than done. The Paris Climate Agreement, introduced in 2015, began the United Nations’ “effort to combat global climate change.” 8 This agreement marked a global initiative to “limit global temperature increase in this century to 2 degrees Celsius above preindustrial levels,” while simultaneously “pursuing means to limit the increase to 1.5 degrees.” 9 Every country on earth has joined together in this agreement for the common purpose of saving our planet. 10 So, what could go wrong here? As much as this sounds like a compelling step in the right direction for climate change, President Donald Trump thought otherwise. In June 2017, President Trump announced the withdrawal of the United States from the Paris Agreement with his proclamation of climate change as a “’hoax’ perpetrated by China.” 11 President Trump continued to question the scientific facts behind climate change, remaining an advocate for the expansion of domestic fossil fuel production. 12 He reversed environmental policies implemented by former President Barack Obama to reduce fossil fuel use. 13

Trump’s actions against the Paris Agreement, however, fail to represent the beliefs of Americans as a whole. The majority of American citizens feel passionate about the fight against climate change. To demonstrate their support, some have gone as far as creating initiatives including America’s Pledge and We Are Still In. 14 Although the United States officially exited the Paris Agreement on November 4, 2020, this withdrawal may not survive permanently. 15 According to experts, our new president “could rejoin in as short as a month’s time.” 16 This offers a glimmer of hope.

The Paris Agreement declares that the United States will reduce greenhouse gas emission levels by 26 to 28 percent by the year 2025. 17 As a leader in greenhouse gas emissions, the United States needs to accept the climate crisis for the serious challenge that it presents and work together with other nations. The concept of working coherently with all nations remains rather tricky; however, I remain optimistic. I think we can learn from how other countries have adapted to the increased heating of our planet. During my recent study abroad experience in the United Kingdom, I was struck by Great Britain’s commitment to combating climate change.

Since the United Kingdom joined the Paris Agreement, the country targets a “net-zero” greenhouse gas emission for 2050. 18 This substantial alteration would mark an 80% reduction of greenhouse gases from 1990, if “clear, stable, and well-designed policies are implemented without interruption.” 19 In order to stay on top of reducing emissions, the United Kingdom tracks electricity and car emissions, “size of onshore and offshore wind farms,” amount of homes and “walls insulated, and boilers upgraded,” as well as the development of government policies, including grants for electric vehicles. 20 A strong grip on this data allows the United Kingdom to target necessary modifications that keep the country on track for 2050. In my brief semester in Newcastle, I took note of these significant changes. The city of Newcastle is small enough that many students and faculty are able to walk or bike to campus and nearby essential shops. However, when driving is unavoidable, the majority of the vehicles used are electric, and many British citizens place a strong emphasis on carpooling to further reduce emissions. The United Kingdom’s determination to severely reduce greenhouse emissions is ambitious and particularly admirable, especially as the United States struggles to shy away from its dependence on fossil fuels.

So how can we, as Americans, stand together to combat global climate change? Here are five adjustments Americans can make to their homes and daily routines that can dramatically make a difference:

Stay cautious of food waste. Studies demonstrate that “Americans throw away up to 40 percent of the food they buy.” 21 By being more mindful of the foods we purchase, opting for leftovers, composting wastes, and donating surplus food to those in need, we can make an individual difference that impacts the greater good. 22
Insulate your home. Insulation functions as a “cost-effective and accessible” method to combat climate change. 23 Homes with modern insulation reduce energy required to heat them, leading to a reduction of emissions and an overall savings; in comparison, older homes can “lose up to 35 percent of heat through their walls.” 24
Switch to LED Lighting. LED stands for “light-emitting diodes,” which use “90 percent less energy than incandescent bulbs and half as much as compact fluorescents.” 25 LED lights create light without producing heat, and therefore do not waste energy. Additionally, these lights have a longer duration than other bulbs, which means they offer a continuing savings. 26
Choose transportation wisely. Choose to walk or bike whenever the option presents itself. If walking or biking is not an option, use an electric or hybrid vehicle which emits less harmful gases. Furthermore, reduce the number of car trips taken, and carpool with others when applicable.
Finally, make your voice heard. The future of our planet remains in our hands, so we might as well use our voices to our advantage. Social media serves as a great platform for this. Moreover, using social media to share helpful hints to combat climate change within your community or to promote an upcoming protest proves beneficial in the long run. If we collectively put our voices to good use, together we can advocate for change.

As many of us are stuck at home due to the COVID-19 pandemic, these suggestions are slightly easier to put into place. With numerous “stay-at-home” orders in effect, Americans have the opportunity to make significant achievements for climate change. Personally, I have taken more precautions towards the amount of food consumed within my household during this pandemic. I have been more aware of food waste, opting for leftovers when too much food remains. Additionally, I have realized how powerful my voice is as a young college student. Now is the opportunity for Americans to share how they feel about climate change. During this unprecedented time, our voice is needed now more than ever in order to make a difference.

However, on a much larger scale, the coronavirus outbreak has shed light on reducing global energy consumption. Reductions in travel, both on the roads and in the air, have triggered a drop in emission rates. In fact, the International Energy Agency predicts a 6 percent decrease in energy consumption around the globe for this year alone. 27 This drop is “equivalent to losing the entire energy demand of India.” 28 Complete lockdowns have lowered the global demand for electricity and slashed CO2 emissions. However, in New York City, the shutdown has only decreased carbon dioxide emissions by 10 percent. 29 This proves that a shift in personal behavior is simply not enough to “fix the carbon emission problem.” 30 Climate policies aimed to reduce fossil fuel production and promote clean technology will be crucial steppingstones to ameliorating climate change effects. Our current reduction of greenhouse gas emissions serves as “the sort of reduction we need every year until net-zero emissions are reached around 2050.” 31 From the start of the coronavirus pandemic, politicians came together for the common good of protecting humanity; this demonstrates that when necessary, global leaders are capable of putting humankind above the economy. 32

After researching statistics comparing the coronavirus to climate change, I thought back to the moment the virus reached pandemic status. I knew that a greater reason underlay all of this global turmoil. Our globe is in dire need of help, and the coronavirus reminds the world of what it means to work together. This pandemic marks a turning point in global efforts to slow down climate change. The methods we enact towards not only stopping the spread of the virus, but slowing down climate change, will ultimately depict how humanity will arise once this pandemic is suppressed. The future of our home planet lies in how we treat it right now.

“Climate Change: What Do All the Terms Mean?,” BBC News (BBC, May 1, 2019), https://www.bbc.com/news/science-environment-48057733 )
Ibid.
Kate Yoder, “Frank Luntz, the GOP's Message Master, Calls for Climate Action,” Grist (Grist, July 26, 2019), https://grist.org/article/the-gops-most-famous-messaging-strategist-calls-for-climate-action
Melissa Denchak, “Paris Climate Agreement: Everything You Need to Know,” NRDC, April 29, 2020, https://www.nrdc.org/stories/paris-climate-agreement-everything-you-need-know)
“Donald J. Trump's Foreign Policy Positions,” Council on Foreign Relations (Council on Foreign Relations), accessed May 7, 2020, https://www.cfr.org/election2020/candidate-tracker/donald-j.-trump?gclid=CjwKCAjw4871BRAjEiwAbxXi21cneTRft_doA5if60euC6QCL7sr-Jwwv76IkgWaUTuyJNx9EzZzRBoCdjsQAvD_BwE#climate and energy )
David Doniger, “Paris Climate Agreement Explained: Does Congress Need to Sign Off?,” NRDC, December 15, 2016, https://www.nrdc.org/experts/david-doniger/paris-climate-agreement-explained-does-congress-need-sign )
“How the UK Is Progressing,” Committee on Climate Change, March 9, 2020, https://www.theccc.org.uk/what-is-climate-change/reducing-carbon-emissions/how-the-uk-is-progressing/)
Ibid.
“Top 10 Ways You Can Fight Climate Change,” Green America, accessed May 7, 2020, https://www.greenamerica.org/your-green-life/10-ways-you-can-fight-climate-change )
Matt McGrath, “Climate Change and Coronavirus: Five Charts about the Biggest Carbon Crash,” BBC News (BBC, May 5, 2020), https://www.bbc.com/news/amp/science-environment-52485712 )

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Essay on Climate Change

Climate Change Essay - The globe is growing increasingly sensitive to climate change. It is currently a serious worldwide concern. The term "Climate Change" describes changes to the earth's climate. It explains the atmospheric changes that have occurred across time, spanning from decades to millions of years. Here are some sample essays on climate change.

100 Words Essay on Climate Change

200 words essay on climate change, 500 words essay on climate change.

The climatic conditions on Earth are changing due to climate change. Several internal and external variables, such as solar radiation, variations in the Earth's orbit, volcanic eruptions, plate tectonics, etc., are to blame for this.

There are strategies for climate change reduction. If not implemented, the weather might get worse, there might be water scarcity, there could be lower agricultural output, and it might affect people's ability to make a living. In order to breathe clean air and drink pure water, you must concentrate on limiting human activity. These are the simple measures that may be taken to safeguard the environment and its resources.

The climate of the Earth has changed significantly over time. While some of these changes were brought on by natural events like volcanic eruptions, floods, forest fires, etc., many of the changes were brought on by human activity. The burning of fossil fuels, domesticating livestock, and other human activities produce a significant quantity of greenhouse gases. This results in an increase of greenhouse effect and global warming which are the major causes for climate change.

Reasons of Climate Change

Some of the reasons of climate change are:

Deforestation

Excessive use of fossil fuels

Water and soil pollution

Plastic and other non biodegradable waste

Wildlife and nature extinction

Consequences of Climate Change

All kinds of life on earth will be affected by climate change if it continues to change at the same pace. The earth's temperature will increase, the monsoon patterns will shift, the sea level will rise, and there will be more frequent storms, volcano eruptions, and other natural calamities. The earth's biological and ecological equilibrium will be disturbed. Humans won't be able to access clean water or air to breathe when the environment becomes contaminated. The end of life on this earth is imminent. To reduce the issue of climate change, we need to bring social awareness along with strict measures to protect and preserve the natural environment.

A shift in the world's climatic pattern is referred to as climate change. Over the centuries, the climate pattern of our planet has undergone modifications. The amount of carbon dioxide in the atmosphere has significantly grown.

When Did Climate Change Begin

It is possible to see signs of climate change as early as the beginning of the industrial revolution. The pace at which the manufacturers produced things on a large scale required a significant amount of raw materials. Since the raw materials being transformed into finished products now have such huge potential for profit, these business models have spread quickly over the world. Hazardous substances and chemicals build up in the environment as a result of company emissions and waste disposal.

Although climate change is a natural occurrence, it is evident that human activity is turning into the primary cause of the current climate change situation. The major cause is the growing population. Natural resources are utilised more and more as a result of the population's fast growth placing a heavy burden on the available resources. Over time, as more and more products and services are created, pollution will eventually increase.

Causes of Climate Change

There are a number of factors that have contributed towards weather change in the past and continue to do so. Let us look at a few:

Solar Radiation |The climate of earth is determined by how quickly the sun's energy is absorbed and distributed throughout space. This energy is transmitted throughout the world by the winds, ocean currents etc which affects the climatic conditions of the world. Changes in solar intensity have an effect on the world's climate.

Deforestation | The atmosphere's carbon dioxide is stored by trees. As a result of their destruction, carbon dioxide builds up more quickly since there are no trees to absorb it. Additionally, trees release the carbon they stored when we burn them.

Agriculture | Many kinds of greenhouse gases are released into the atmosphere by growing crops and raising livestock. Animals, for instance, create methane, a greenhouse gas that is 30 times more potent than carbon dioxide. The nitrous oxide used in fertilisers is roughly 300 times more strong than carbon dioxide.

How to Prevent Climate Change

We need to look out for drastic steps to stop climate change since it is affecting the resources and life on our planet. We can stop climate change if the right solutions are put in place. Here are some strategies for reducing climate change:

Raising public awareness of climate change

Prohibiting tree-cutting and deforestation.

Ensure the surroundings are clean.

Refrain from using chemical fertilisers.

Water and other natural resource waste should be reduced.

Protect the animals and plants.

Purchase energy-efficient goods and equipment.

Increase the number of trees in the neighbourhood and its surroundings.

Follow the law and safeguard the environment's resources.

Reduce the amount of energy you use.

During the last few decades especially, climate change has grown to be of concern. Global concern has been raised over changes in the Earth's climatic pattern. The causes of climate change are numerous, as well as the effects of it and it is our responsibility as inhabitants of this planet to look after its well being and leave it in a better condition for future generations.

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Responding to the Climate Threat: Essays on Humanity’s Greatest Challenge

A new book co-authored by MIT Joint Program Founding Co-Director Emeritus Henry Jacoby

From the Back Cover

This book demonstrates how robust and evolving science can be relevant to public discourse about climate policy. Fighting climate change is the ultimate societal challenge, and the difficulty is not just in the wrenching adjustments required to cut greenhouse emissions and to respond to change already under way. A second and equally important difficulty is ensuring widespread public understanding of the natural and social science. This understanding is essential for an effective risk management strategy at a planetary scale. The scientific, economic, and policy aspects of climate change are already a challenge to communicate, without factoring in the distractions and deflections from organized programs of misinformation and denial.

Here, four scholars, each with decades of research on the climate threat, take on the task of explaining our current understanding of the climate threat and what can be done about it, in lay language―importantly, without losing critical aspects of the natural and social science. In a series of essays, published during the 2020 presidential election, the COVID pandemic, and through the fall of 2021, they explain the essential components of the challenge, countering the forces of distrust of the science and opposition to a vigorous national response.

Each of the essays provides an opportunity to learn about a particular aspect of climate science and policy within the complex context of current events. The overall volume is more than the sum of its individual articles. Proceeding each essay is an explanation of the context in which it was written, followed by observation of what has happened since its first publication. In addition to its discussion of topical issues in modern climate science, the book also explores science communication to a broad audience. Its authors are not only scientists – they are also teachers, using current events to teach when people are listening. For preserving Earth’s planetary life support system, science and teaching are essential. Advancing both is an unending task.

About the Authors

Gary Yohe is the Huffington Foundation Professor of Economics and Environmental Studies, Emeritus, at Wesleyan University in Connecticut. He served as convening lead author for multiple chapters and the Synthesis Report for the IPCC from 1990 through 2014 and was vice-chair of the Third U.S. National Climate Assessment.

Henry Jacoby is the William F. Pounds Professor of Management, Emeritus, in the MIT Sloan School of Management and former co-director of the MIT Joint Program on the Science and Policy of Global Change, which is focused on the integration of the natural and social sciences and policy analysis in application to the threat of global climate change.

Richard Richels directed climate change research at the Electric Power Research Institute (EPRI). He served as lead author for multiple chapters of the IPCC in the areas of mitigation, impacts and adaptation from 1992 through 2014. He also served on the National Assessment Synthesis Team for the first U.S. National Climate Assessment.

Ben Santer is a climate scientist and John D. and Catherine T. MacArthur Fellow. He contributed to all six IPCC reports. He was the lead author of Chapter 8 of the 1995 IPCC report which concluded that “the balance of evidence suggests a discernible human influence on global climate”. He is currently a Visiting Researcher at UCLA’s Joint Institute for Regional Earth System Science & Engineering.

Access the Book

View the book on the publisher's website here .

Order the book from Amazon here .

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Essay on Climate Change: Check Samples in 100, 250 Words

Updated on
Sep 21, 2023

Writing an essay on climate change is crucial to raise awareness and advocate for action. The world is facing environmental challenges, so in a situation like this such essay topics can serve as s platform to discuss the causes, effects, and solutions to this pressing issue. They offer an opportunity to engage readers in understanding the urgency of mitigating climate change for the sake of our planet’s future.

Must Read: Essay On Environment

Table of Contents

1 What Is Climate Change?
2 What are the Causes of Climate Change?
3 What are the effects of Climate Change?
4 How to fight climate change?
5 Essay On Climate Change in 100 Words
6 Climate Change Sample Essay 250 Words

What Is Climate Change?

Climate change is the significant variation of average weather conditions becoming, for example, warmer, wetter, or drier—over several decades or longer. It may be natural or anthropogenic. However, in recent times, it’s been in the top headlines due to escalations caused by human interference.

What are the Causes of Climate Change?

Obama at the First Session of COP21 rightly quoted “We are the first generation to feel the impact of climate change, and the last generation that can do something about it.”.Identifying the causes of climate change is the first step to take in our fight against climate change. Below stated are some of the causes of climate change:

Greenhouse Gas Emissions: Mainly from burning fossil fuels (coal, oil, and natural gas) for energy and transportation.
Deforestation: The cutting down of trees reduces the planet’s capacity to absorb carbon dioxide.
Industrial Processes: Certain manufacturing activities release potent greenhouse gases.
Agriculture: Livestock and rice cultivation emit methane, a potent greenhouse gas.

What are the effects of Climate Change?

Climate change poses a huge risk to almost all life forms on Earth. The effects of climate change are listed below:

Global Warming: Increased temperatures due to trapped heat from greenhouse gases.
Melting Ice and Rising Sea Levels: Ice caps and glaciers melt, causing oceans to rise.
Extreme Weather Events: More frequent and severe hurricanes, droughts, and wildfires.
Ocean Acidification: Oceans absorb excess CO2, leading to more acidic waters harming marine life.
Disrupted Ecosystems: Shifting climate patterns disrupt habitats and threaten biodiversity.
Food and Water Scarcity: Altered weather affects crop yields and strains water resources.
Human Health Risks: Heat-related illnesses and the spread of diseases.
Economic Impact: Damage to infrastructure and increased disaster-related costs.
Migration and Conflict: Climate-induced displacement and resource competition.

How to fight climate change?

‘Climate change is a terrible problem, and it absolutely needs to be solved. It deserves to be a huge priority,’ says Bill Gates. The below points highlight key actions to combat climate change effectively.

Energy Efficiency: Improve energy efficiency in all sectors.
Protect Forests: Stop deforestation and promote reforestation.
Sustainable Agriculture: Adopt eco-friendly farming practices.
Advocacy: Raise awareness and advocate for climate-friendly policies.
Innovation: Invest in green technologies and research.
Government Policies: Enforce climate-friendly regulations and targets.
Corporate Responsibility: Encourage sustainable business practices.
Individual Action: Reduce personal carbon footprint and inspire others.

Essay On Climate Change in 100 Words

Climate change refers to long-term alterations in Earth’s climate patterns, primarily driven by human activities, such as burning fossil fuels and deforestation, which release greenhouse gases into the atmosphere. These gases trap heat, leading to global warming. The consequences of climate change are widespread and devastating. Rising temperatures cause polar ice caps to melt, contributing to sea level rise and threatening coastal communities. Extreme weather events, like hurricanes and wildfires, become more frequent and severe, endangering lives and livelihoods. Additionally, shifts in weather patterns can disrupt agriculture, leading to food shortages. To combat climate change, global cooperation, renewable energy adoption, and sustainable practices are crucial for a more sustainable future.

Must Read: Essay On Global Warming

Climate Change Sample Essay 250 Words

Climate change represents a pressing global challenge that demands immediate attention and concerted efforts. Human activities, primarily the burning of fossil fuels and deforestation, have significantly increased the concentration of greenhouse gases in the atmosphere. This results in a greenhouse effect, trapping heat and leading to a rise in global temperatures, commonly referred to as global warming.

The consequences of climate change are far-reaching and profound. Rising sea levels threaten coastal communities, displacing millions and endangering vital infrastructure. Extreme weather events, such as hurricanes, droughts, and wildfires, have become more frequent and severe, causing devastating economic and human losses. Disrupted ecosystems affect biodiversity and the availability of vital resources, from clean water to agricultural yields.

Moreover, climate change has serious implications for food and water security. Changing weather patterns disrupt traditional farming practices and strain freshwater resources, potentially leading to conflicts over access to essential commodities.

Addressing climate change necessitates a multifaceted approach. First, countries must reduce their greenhouse gas emissions through the transition to renewable energy sources, increased energy efficiency, and reforestation efforts. International cooperation is crucial to set emission reduction targets and hold nations accountable for meeting them.

In conclusion, climate change is a global crisis with profound and immediate consequences. Urgent action is needed to mitigate its impacts and secure a sustainable future for our planet. By reducing emissions and implementing adaptation strategies, we can protect vulnerable communities, preserve ecosystems, and ensure a livable planet for future generations. The time to act is now.

Climate change refers to long-term shifts in Earth’s climate patterns, primarily driven by human activities like burning fossil fuels and deforestation.

Five key causes of climate change include excessive greenhouse gas emissions from human activities, notably burning fossil fuels and deforestation.

We hope this blog gave you an idea about how to write and present an essay on climate change that puts forth your opinions. The skill of writing an essay comes in handy when appearing for standardized language tests. Thinking of taking one soon? Leverage Edu provides the best online test prep for the same via Leverage Live . Register today to know more!

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Hey there! I'm a content writer who turns complex ideas into clear, engaging stories. Think of me as your translator, taking expert knowledge and making it interesting and relatable for everyone.

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What Is Climate Change?

Climate change is a long-term change in the average weather patterns that have come to define Earth’s local, regional and global climates. These changes have a broad range of observed effects that are synonymous with the term.

Changes observed in Earth’s climate since the mid-20th century are driven by human activities, particularly fossil fuel burning, which increases heat-trapping greenhouse gas levels in Earth’s atmosphere, raising Earth’s average surface temperature. Natural processes, which have been overwhelmed by human activities, can also contribute to climate change, including internal variability (e.g., cyclical ocean patterns like El Niño, La Niña and the Pacific Decadal Oscillation) and external forcings (e.g., volcanic activity, changes in the Sun’s energy output , variations in Earth’s orbit ).

Scientists use observations from the ground, air, and space, along with computer models , to monitor and study past, present, and future climate change. Climate data records provide evidence of climate change key indicators, such as global land and ocean temperature increases; rising sea levels; ice loss at Earth’s poles and in mountain glaciers; frequency and severity changes in extreme weather such as hurricanes, heatwaves, wildfires, droughts, floods, and precipitation; and cloud and vegetation cover changes.

“Climate change” and “global warming” are often used interchangeably but have distinct meanings. Similarly, the terms "weather" and "climate" are sometimes confused, though they refer to events with broadly different spatial- and timescales.

What Is Global Warming?

Global warming is the long-term heating of Earth’s surface observed since the pre-industrial period (between 1850 and 1900) due to human activities, primarily fossil fuel burning, which increases heat-trapping greenhouse gas levels in Earth’s atmosphere. This term is not interchangeable with the term "climate change."

Since the pre-industrial period, human activities are estimated to have increased Earth’s global average temperature by about 1 degree Celsius (1.8 degrees Fahrenheit), a number that is currently increasing by more than 0.2 degrees Celsius (0.36 degrees Fahrenheit) per decade. The current warming trend is unequivocally the result of human activity since the 1950s and is proceeding at an unprecedented rate over millennia.

Weather vs. Climate

“if you don’t like the weather in new england, just wait a few minutes.” - mark twain.

Weather refers to atmospheric conditions that occur locally over short periods of time—from minutes to hours or days. Familiar examples include rain, snow, clouds, winds, floods, or thunderstorms.

Climate, on the other hand, refers to the long-term (usually at least 30 years) regional or even global average of temperature, humidity, and rainfall patterns over seasons, years, or decades.

Find Out More: A Guide to NASA’s Global Climate Change Website

This website provides a high-level overview of some of the known causes, effects and indications of global climate change:

Evidence. Brief descriptions of some of the key scientific observations that our planet is undergoing abrupt climate change.

Causes. A concise discussion of the primary climate change causes on our planet.

Effects. A look at some of the likely future effects of climate change, including U.S. regional effects.

Vital Signs. Graphs and animated time series showing real-time climate change data, including atmospheric carbon dioxide, global temperature, sea ice extent, and ice sheet volume.

Earth Minute. This fun video series explains various Earth science topics, including some climate change topics.

Other NASA Resources

Goddard Scientific Visualization Studio. An extensive collection of animated climate change and Earth science visualizations.

Sea Level Change Portal. NASA's portal for an in-depth look at the science behind sea level change.

NASA’s Earth Observatory. Satellite imagery, feature articles and scientific information about our home planet, with a focus on Earth’s climate and environmental change.

Header image is of Apusiaajik Glacier, and was taken near Kulusuk, Greenland, on Aug. 26, 2018, during NASA's Oceans Melting Greenland (OMG) field operations. Learn more here . Credit: NASA/JPL-Caltech

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Table Of Contents

Human activity affects global surface temperatures by changing Earth ’s radiative balance—the “give and take” between what comes in during the day and what Earth emits at night. Increases in greenhouse gases —i.e., trace gases such as carbon dioxide and methane that absorb heat energy emitted from Earth’s surface and reradiate it back—generated by industry and transportation cause the atmosphere to retain more heat, which increases temperatures and alters precipitation patterns.

Global warming, the phenomenon of increasing average air temperatures near Earth’s surface over the past one to two centuries, happens mostly in the troposphere , the lowest level of the atmosphere, which extends from Earth’s surface up to a height of 6–11 miles. This layer contains most of Earth’s clouds and is where living things and their habitats and weather primarily occur.

Continued global warming is expected to impact everything from energy use to water availability to crop productivity throughout the world. Poor countries and communities with limited abilities to adapt to these changes are expected to suffer disproportionately. Global warming is already being associated with increases in the incidence of severe and extreme weather, heavy flooding , and wildfires —phenomena that threaten homes, dams, transportation networks, and other facets of human infrastructure. Learn more about how the IPCC’s Sixth Assessment Report, released in 2021, describes the social impacts of global warming.

Polar bears live in the Arctic , where they use the region’s ice floes as they hunt seals and other marine mammals . Temperature increases related to global warming have been the most pronounced at the poles, where they often make the difference between frozen and melted ice. Polar bears rely on small gaps in the ice to hunt their prey. As these gaps widen because of continued melting, prey capture has become more challenging for these animals.

Recent News

global warming , the phenomenon of increasing average air temperatures near the surface of Earth over the past one to two centuries. Climate scientists have since the mid-20th century gathered detailed observations of various weather phenomena (such as temperatures, precipitation , and storms) and of related influences on climate (such as ocean currents and the atmosphere’s chemical composition). These data indicate that Earth’s climate has changed over almost every conceivable timescale since the beginning of geologic time and that human activities since at least the beginning of the Industrial Revolution have a growing influence over the pace and extent of present-day climate change .

Giving voice to a growing conviction of most of the scientific community , the Intergovernmental Panel on Climate Change (IPCC) was formed in 1988 by the World Meteorological Organization (WMO) and the United Nations Environment Program (UNEP). The IPCC’s Sixth Assessment Report (AR6), published in 2021, noted that the best estimate of the increase in global average surface temperature between 1850 and 2019 was 1.07 °C (1.9 °F). An IPCC special report produced in 2018 noted that human beings and their activities have been responsible for a worldwide average temperature increase between 0.8 and 1.2 °C (1.4 and 2.2 °F) since preindustrial times, and most of the warming over the second half of the 20th century could be attributed to human activities.

AR6 produced a series of global climate predictions based on modeling five greenhouse gas emission scenarios that accounted for future emissions, mitigation (severity reduction) measures, and uncertainties in the model projections. Some of the main uncertainties include the precise role of feedback processes and the impacts of industrial pollutants known as aerosols , which may offset some warming. The lowest-emissions scenario, which assumed steep cuts in greenhouse gas emissions beginning in 2015, predicted that the global mean surface temperature would increase between 1.0 and 1.8 °C (1.8 and 3.2 °F) by 2100 relative to the 1850–1900 average. This range stood in stark contrast to the highest-emissions scenario, which predicted that the mean surface temperature would rise between 3.3 and 5.7 °C (5.9 and 10.2 °F) by 2100 based on the assumption that greenhouse gas emissions would continue to increase throughout the 21st century. The intermediate-emissions scenario, which assumed that emissions would stabilize by 2050 before declining gradually, projected an increase of between 2.1 and 3.5 °C (3.8 and 6.3 °F) by 2100.

Many climate scientists agree that significant societal, economic, and ecological damage would result if the global average temperature rose by more than 2 °C (3.6 °F) in such a short time. Such damage would include increased extinction of many plant and animal species, shifts in patterns of agriculture , and rising sea levels. By 2015 all but a few national governments had begun the process of instituting carbon reduction plans as part of the Paris Agreement , a treaty designed to help countries keep global warming to 1.5 °C (2.7 °F) above preindustrial levels in order to avoid the worst of the predicted effects. Whereas authors of the 2018 special report noted that should carbon emissions continue at their present rate, the increase in average near-surface air temperature would reach 1.5 °C sometime between 2030 and 2052, authors of the AR6 report suggested that this threshold would be reached by 2041 at the latest.

Combination shot of Grinnell Glacier taken from the summit of Mount Gould, Glacier National Park, Montana in the years 1938, 1981, 1998 and 2006.

The AR6 report also noted that the global average sea level had risen by some 20 cm (7.9 inches) between 1901 and 2018 and that sea level rose faster in the second half of the 20th century than in the first half. It also predicted, again depending on a wide range of scenarios, that the global average sea level would rise by different amounts by 2100 relative to the 1995–2014 average. Under the report’s lowest-emission scenario, sea level would rise by 28–55 cm (11–21.7 inches), whereas, under the intermediate emissions scenario, sea level would rise by 44–76 cm (17.3–29.9 inches). The highest-emissions scenario suggested that sea level would rise by 63–101 cm (24.8–39.8 inches) by 2100.

The scenarios referred to above depend mainly on future concentrations of certain trace gases, called greenhouse gases , that have been injected into the lower atmosphere in increasing amounts through the burning of fossil fuels for industry, transportation , and residential uses. Modern global warming is the result of an increase in magnitude of the so-called greenhouse effect , a warming of Earth’s surface and lower atmosphere caused by the presence of water vapour , carbon dioxide , methane , nitrous oxides , and other greenhouse gases. In 2014 the IPCC first reported that concentrations of carbon dioxide, methane, and nitrous oxides in the atmosphere surpassed those found in ice cores dating back 800,000 years.

Of all these gases, carbon dioxide is the most important, both for its role in the greenhouse effect and for its role in the human economy. It has been estimated that, at the beginning of the industrial age in the mid-18th century, carbon dioxide concentrations in the atmosphere were roughly 280 parts per million (ppm). By the end of 2022 they had risen to 419 ppm, and, if fossil fuels continue to be burned at current rates, they are projected to reach 550 ppm by the mid-21st century—essentially, a doubling of carbon dioxide concentrations in 300 years.

What's the problem with an early spring?

A vigorous debate is in progress over the extent and seriousness of rising surface temperatures, the effects of past and future warming on human life, and the need for action to reduce future warming and deal with its consequences. This article provides an overview of the scientific background related to the subject of global warming. It considers the causes of rising near-surface air temperatures, the influencing factors, the process of climate research and forecasting, and the possible ecological and social impacts of rising temperatures. For an overview of the public policy developments related to global warming occurring since the mid-20th century, see global warming policy . For a detailed description of Earth’s climate, its processes, and the responses of living things to its changing nature, see climate . For additional background on how Earth’s climate has changed throughout geologic time , see climatic variation and change . For a full description of Earth’s gaseous envelope, within which climate change and global warming occur, see atmosphere .

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Introductory essay

Written by the educators who created Climate Change, a brief look at the key facts, tough questions and big ideas in their field. Begin this TED Study with a fascinating read that gives context and clarity to the material.

The greenhouse effect has been detected, and it is changing our climate now. James Hansen, June 24, 1988

The drought that crippled much of the U.S. and Canada in 1988-89 was the costliest natural disaster in U.S. history prior to Hurricane Katrina. It spawned dust storms in the Midwest and forest fires in Yellowstone National Park. That summer, thousands died during an intense heat wave.

It was against this backdrop, on a 101-degree day in the nation's capital, that NASA scientist James Hansen delivered his landmark testimony to the Senate Energy and Natural Resources Committee. The next day, The New York Times ran a headline that read "Global Warming Has Begun, Expert Warns." Coverage of Hansen's testimony by the Times and other national and global media organizations transformed climate change from a relatively obscure scientific topic to one that people began to discuss over dinner, in the pub, at school and at work.

It remained newsworthy over the rest of that pivotal year. Days after Hansen's testimony, the World Meteorological Association (WMO) hosted a conference called "Our Changing Atmosphere," one of the earliest international climate change gatherings. 300 scientists and policy makers representing 46 countries attended. Participants called upon countries to reduce carbon dioxide emissions by 20 percent or more by 2005, and by the end of the year the WMO and the United Nations Environment Program had established the Intergovernmental Panel on Climate Change (IPCC).

British Prime Minister Margaret Thatcher famously became one of the first world leaders to talk about climate change in a speech delivered that September to the Royal Society. "For generations, we have assumed that the efforts of mankind would leave the fundamental equilibrium of the world's systems and atmosphere stable," remarked Thatcher. "But it is possible that… we have unwittingly begun a massive experiment with the system of this planet itself." In this speech and others she gave during the remainder of her tenure, Thatcher advocated for expanded climate research and for policies that would safeguard the environment and promote sustainable development.

As global public awareness of the issue grew in the 1980s and beyond, the science and its significance were vigorously debated. Is there credible evidence that climate change is real? If it's real, when and how will we feel its effects? If it's real, what should be done, and who should do it? (Thatcher herself reversed position many years later, calling climate change "the doomsters' favorite subject" predicated on science that is "extremely obscure" and leading to "worldwide, supra-national socialism.")

Climate change is still hotly contested and the debate is often shrill, with skeptics branded as "climate deniers" and activists derisively labeled "warmists." Tensions are palpable, as when nearly 800 NGO representatives walked out of the 2013 international climate negotiations in Poland.

How has climate change become so politicized? It requires us to tackle thorny ethical and economic dilemmas, like how the least developed nations will cope with the effects of climate change and who should help them. It highlights serious structural issues like how to reckon with entrenched carbon-based industry interests and the connected yet complex resistances to decarbonization efforts. It calls for global governmental collaboration on an unprecedented scale. Atmospheric chemist Rachel Pike comments, "It goes, of course, to the top of our sky, but it goes to the bottom of the ocean, to every corner of the globe. It's every nation, every people. It's political, it's economic, it requires debate; it's scientific, it's engineering. It's the biggest problem you could ever imagine." It's no surprise, then, that climate change prompts a range of individual psychological and collective societal responses—avoidance, fatalism, denial, paralysis and wishful thinking, to name a few.

It's also not surprising that the scientific evidence is contested, given that the indicators of climate change -- like changing precipitation patterns over decadal time scales -- may be difficult for ordinary citizens to detect, and given what's at stake once we acknowledge that those indicators are correct. Initially -- and even today, despite the fact that we've reached the gold standard for scientific certainty -- some have questioned the quantity and quality of the evidence, feeding the public's perception that the science is half-baked. In reality, by the time Hansen delivered his congressional testimony in 1988, he'd been researching the relationship between atmospheric components and temperature since the 1960s, building upon a line of scientific inquiry stretching back at least a century.

A crash course on climate science

During the previous century, French physicist Joseph Fourier (1821) and Irish physicist John Tyndall (1861) described the Earth's natural "greenhouse effect" whereby water vapor and other gases in the atmosphere regulate the planet's surface temperatures. By the end of the 1800s, Swedish chemist Svante Arrhenius had made the prediction that industrialized coal-burning would intensify the natural greenhouse effect. Remarkably, when Arrhenius calculated the quantitative effects on temperature his results were relatively close to what's predicted by modern climate change models.

In the 1930s, British engineer and citizen scientist Guy Callendar demonstrated that global temperatures were rising, using data from more than 140 weather stations around the world. Callendar argued that rising CO2 levels were to blame, but his hypothesis failed to gain widespread acceptance in the scientific community. Two decades later, American researcher Gilbert Plass analyzed the infrared absorption of various gases and created the early computational models suggesting that a 3- to 4-degree rise in temperature would result from doubling the concentration of atmospheric CO2. For the scientists aware of Plass's work, Dave Keeling's findings a few years later were undoubtedly unsettling: the American geochemist provided the first unequivocal proof that atmospheric CO2 levels were increasing, based on analysis of atmospheric samples he collected at the Mauna Loa Observatory in Hawaii.

Many scientists assumed that the world's oceans would absorb the extra atmospheric CO2 that human industry was producing, until American oceanographer Roger Revelle and chemist Hans Suess demonstrated otherwise. The authors of a 1957 National Academy of Sciences climatology report quoted Revelle: "In consuming our fossil fuels at a prodigious rate, our civilization is conducting a grandiose scientific experiment."

Revelle's subsequent testimony before a Congressional committee helped put climate change on the radar of elected officials. In 1965, a presidential advisory panel warned that the greenhouse effect was a "real concern," and the U.S. government's engagement deepened when Nixon established the National Oceanic and Atmospheric Administration (NOAA) in 1970. Political and scientific interest in climate change grew during the ‘70s, culminating in the First World Climate Conference sponsored by the WMO in 1979. The Second World Climate Conference a decade later paved the way for the United Nations Conference on Environment and Development (UNCED) in 1992, where the United Nations Framework Convention on Climate Change (UNFCCC) was launched and the groundwork laid for subsequent international climate change negotiations.

The challenge of communicating climate change

The task of translating climate research for policymakers and the general public has been hampered by multiple definitions of climate change within and outside of the scientific community. As Roger Pielke Jr. argued in his 2005 article " Misdefining climate change: Consequences for science and action ," definitions used by the UNFCCC, IPCC and others profoundly influence public opinion and the range of probable policy choices. Additionally, the conflation of "climate change," "global warming" and "the greenhouse effect" in news coverage has fueled public confusion about how to diagnose and treat the problem. For our purposes here, "climate change" is any change in climate over time due to natural variability or as a result of human activity. This is consistent with the IPCC's use of the term.

Rachel Pike's comment that it's the "biggest problem you could ever imagine" reminds us that climate change is a dense and multifaceted issue. There are facets of climate science and policy where convergent agreement dominates, while in other areas, contentious disagreement has generated worthwhile debate and discussion. The media's conflation of these diverse dimensions into one sweeping issue has contributed to confusion and created a breeding ground for manipulation from outlier viewpoints to inadvertently or deliberately skew public opinion.

It's important that we critically assess who ‘speaks for climate change' and understand their agendas. To the extent that their claims are flatly reported, or that in the name of fairness and balance speakers are frequently placed on equal footing irrespective of their expertise, individuals and organizations have become empowered to speak with authority through mass media. This skews how citizens and policy makers understand climate change issues, the stakes involved and the spectrum of possible actions to take. Cognizant of this, in 2013 the L.A. Times announced it would no longer print letters from climate change detractors. L.A. Times letters editor Paul Thornton wrote, "Simply put, I do my best to keep errors of fact off the letters page; when one does run, a correction is published. Saying "there's no sign humans have caused climate change" is not stating an opinion, it's asserting a factual inaccuracy."

About this TED Studies collection

While poorly communicated information can hamper the ability to make important decisions related to climate change causes and consequences, accurate and engaging information accessed through these TED Talks gives you power: power to understand, power to share your understanding with others, and power to take action.

Here we'll consider the environment as our planet's renewable and non-renewable natural resources, and a support system for the quantity, quality and sustainability of human activities. We'll see science as a systematic enterprise that builds and organizes knowledge, sorting through the unceasing flow of human experience. We'll explore policy as guides for decision making about human management of environment, articulating the principles, intentions, and mandates about who gets what, when and how. And we'll contemplate values as systems of conduct and broad preferences (individual to societal) concerning the morality of outcomes.

We begin with three modules that center our considerations on the climate science. First, through science journalist Lee Hotz's TED Talk, we explore the evidence that the climate is changing. Next, photographer James Balog contributes additional compelling, visible, measurable documentation of certain climate change effects. Balog's talk also highlights critical elements of the certainty/uncertainty debate that has dogged the issue. Third, through the TED Talk by climate scientist James Hansen, we explore the convergent agreement in the scientific community that humans contribute to contemporary climate change.

We continue with three modules exploring the politics of taking action through mitigation, adaptation and cross-cutting market-based, risk-reduction regulatory measures. We start with a TED Talk from former United States Vice President Al Gore, who calls for various ways to reduce our emissions of greenhouse gases into the atmosphere (mitigation). Next, we turn to the TED Talk by environmental lawyer Vicki Arroyo, who suggests ways in which human communities can reduce their vulnerability to climate change and increase resilience (adaptation). Then we consider cross-cutting, often market-based risk reduction efforts by way of a TED Talk from journalist Naomi Klein. Her talk opens a space where we can critically evaluate climate risk reduction endeavors such as the market-based cap and trade proposals that are considered an essential tool by some, and merely a shell game by others.

We finish with two modules that focus our attention on important values and ethics questions. First, former UK Prime Minister Gordon Brown challenges us to build a stronger global society by cutting carbon emissions in a way that is beneficial and equitable to all nations. Finally we turn to sustainabily strategist Johan Rockström's TED Talk about how nine ‘planetary boundaries' (which include climate change) can usefully guide ecosystem and environmental protection for future generations.

Let's begin with a look at the scientific evidence that's being unearthed at" the South Pole; science journalist Lee Hotz takes us there via his TED Talk "Inside an Antarctic time machine."

Inside an Antarctic time machine

Relevant talks.

New thinking on the climate crisis

Gordon Brown

Global ethic vs. national interest.

James Balog

Time-lapse proof of extreme ice loss.

James Hansen

Why i must speak out about climate change.

Johan Rockström

Let the environment guide our development.

Naomi Klein

Addicted to risk.

Vicki Arroyo

Let's prepare for our new climate.

ENCYCLOPEDIC ENTRY

Climate change.

Climate change is a long-term shift in global or regional climate patterns. Often climate change refers specifically to the rise in global temperatures from the mid-20th century to present.

Earth Science, Climatology

Fracking tower

Fracking is a controversial form of drilling that uses high-pressure liquid to create cracks in underground shale to extract natural gas and petroleum. Carbon emissions from fossils fuels like these have been linked to global warming and climate change.

Photograph by Mark Thiessen / National Geographic

Climate is sometimes mistaken for weather. But climate is different from weather because it is measured over a long period of time, whereas weather can change from day to day, or from year to year. The climate of an area includes seasonal temperature and rainfall averages, and wind patterns. Different places have different climates. A desert, for example, is referred to as an arid climate because little water falls, as rain or snow, during the year. Other types of climate include tropical climates, which are hot and humid , and temperate climates, which have warm summers and cooler winters.

Climate change is the long-term alteration of temperature and typical weather patterns in a place. Climate change could refer to a particular location or the planet as a whole. Climate change may cause weather patterns to be less predictable. These unexpected weather patterns can make it difficult to maintain and grow crops in regions that rely on farming because expected temperature and rainfall levels can no longer be relied on. Climate change has also been connected with other damaging weather events such as more frequent and more intense hurricanes, floods, downpours, and winter storms.

In polar regions, the warming global temperatures associated with climate change have meant ice sheets and glaciers are melting at an accelerated rate from season to season. This contributes to sea levels rising in different regions of the planet. Together with expanding ocean waters due to rising temperatures, the resulting rise in sea level has begun to damage coastlines as a result of increased flooding and erosion.

The cause of current climate change is largely human activity, like burning fossil fuels , like natural gas, oil, and coal. Burning these materials releases what are called greenhouse gases into Earth’s atmosphere . There, these gases trap heat from the sun’s rays inside the atmosphere causing Earth’s average temperature to rise. This rise in the planet's temperature is called global warming. The warming of the planet impacts local and regional climates. Throughout Earth's history, climate has continually changed. When occuring naturally, this is a slow process that has taken place over hundreds and thousands of years. The human influenced climate change that is happening now is occuring at a much faster rate.

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Related Resources

Climate change:

Tackling a global challenge

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Ede Ijjasz-Vasquez

Nonresident Senior Fellow, Africa Growth Initiative, Brookings Institution

Aloysius Uche Ordu

Director and Senior Fellow, Africa Growth Initiative, Brookings Institution

From COP26 (Glasgow) to COP27 (Sharm el-Sheikh, Egypt): What to expect at Africa’s COP

Despite progress towards the shared goal of addressing climate change, COP26 did not sufficiently put the world on track to successfully tackle the problem. The outcomes especially fell short of what Africans had hoped for. On the positive side, the Glasgow Accord kept the “1.5 o C warming goal alive,” and countries have been asked to come to COP27, to be held in Sharm el Sheikh, Egypt, with more ambitious Nationally Determined Contribution (NDCs). A new agreement on global carbon trading was achieved, adding a much-needed tool to the fight against climate change. Negotiators reached other significant agreements in Glasgow, notably 65 countries committed to phasing out coal power, more than 100 countries agreed to slash methane emissions, and 130 countries—representing over 90 percent of the world’s forests—pledged to end deforestation by 2030.

On the other hand, developed countries failed to reach the $100 billion annual funds promised in Paris to developing countries for climate action by 2020. The current NDCs are estimated to reach a warming trajectory of 2.4 o C—almost an entire degree above the goal . The discussion on climate “loss and damage”—what damage is caused by climate change and which parties should pay for it—made some modest progress, and the Glasgow Accord called to start a dialogue to discuss funding arrangements. Such an announcement is a major step given that many major powers had previously opposed even using the words “loss and damage” in climate-related negotiations.

“Under the projected warming trajectory of 2.4 o C, the impacts of climate change could make many parts of Africa uninhabitable.”

The evident lack of urgency contrasts sharply with the projections from the Sixth Assessment of the Intergovernmental Panel on Climate Change (IPCC) for Africa. Life-threatening temperatures above 40 o C are projected to increase by 10 to 140 days a year, depending on the scenario and region. The continent will see drier conditions in most regions, with more droughts but also more flooding. With the rise in sea level (as much as 0.9 meters by 2100 under high-warming scenarios) and more frequent flooding, a current 1-in-100 year flood event will become 1-in-10 or -20 years by 2050, and 1-in-5 years to annually by 2100, even under moderate warming. With rapidly growing cities in low-lying coastal areas in Africa, the damage to property and livelihoods more generally, exacerbated by climate change, will be compounded. In other words, under the projected warming trajectory of 2.4 o C, the impacts of climate change could make many parts of Africa uninhabitable. Policy change, financial transfers, and decisive and transformational mitigation measures by the largest-emitting countries are critical. The narrative is clear and remains consistent: Africa’s historical and current emissions of greenhouse gases are minimal; still, the region will suffer some of climate change’s most severe consequences if not adequately addressed.

Even if the world remains under 1.5 o C warming, Africa will need to adapt to the new reality of a rapidly changing climate. Thankfully, COP26 did result in some positive steps regarding climate adaptation. The developed world recognized the need to increase funding for adaptation support: The Glasgow Accord “urges developed country Parties to at least double their collective provision of climate finance for adaptation to developing country Parties from 2019 levels by 2025.” Africa was already moving toward a similar goal: The African Development Bank and the Global Center of Adaptation launched a $25 billion program to finance accelerated adaptation in the region earlier in the year.

“Even if the world remains under 1.5 o C warming, Africa will need to adapt to the new reality of a rapidly changing climate.”

Africa has great opportunities to help the world fight climate change but cannot do it alone. The protection and sustainable management of its forest and marine resources can provide essential carbon sinks. In fact, the Congo Basin— the world’s second-largest rainforest and which absorbs 1.2 billion tons of CO2 each year —also has vital mineral reserves needed for the clean industries that underpin the net-zero commitments of countries worldwide. The energy, transport, and urban infrastructure that is yet to be built in Africa over the next two decades will either lock the region into a high-emission economic development trajectory or support the global climate goals if adequate additional resources to finance the extra costs of decarbonization are provided at the level and speed needed.

COP27—the “Africa COP”—is a unique opportunity to accelerate progress in climate action and mobilize the partnerships needed for Africa’s rapid, inclusive, green, and resilient development. However, Africa’s policymakers should not be passive recipients of what “others” can do for Africa in COP27. Africans should be well prepared and organized. They should have a unified, active, and consistent voice about the dire consequences of climate change for the continent and the urgency to take action.

“Africa has great opportunities to help the world fight climate change but cannot do it alone.”

First and foremost, the world needs to show at COP27 that progress and firm commitments—not only pledges—are moving the needle towards the 1.5 o C warming level. As noted above, Africa absolutely cannot afford a 2.4 o C warmer world: At that level of warming, adaptation measures in many parts of the continent may not be technically feasible or financially viable. This point highlights the importance of the other significant opportunity presented by COP27: Leaders must further raise the level of action, speed, and ambition toward climate adaptation, especially for Africa and vulnerable countries in other regions.

As leaders and negotiators descend on Sharm el-Sheikh in 2022, they should focus on four distinct opportunities for decisive, urgent climate action. First, OECD countries and international financial institutions must increase their levels of concessional and private funding for adaptation, including a larger proportion of grants, rapidly and significantly. Second, leaders should increase their focus on the development and scaled-up rollout of adaptation technologies. Climate mitigation technologies receive most of the funding, attention, and support compared to adaptation technologies. At COP27, global leaders must push for a greater balance with adaptation technologies, including the localization and scaling-up of existing African solutions, including multi-hazard early warning systems combining earth observing systems and artificial intelligence with locally trusted communication channels in Africa. Importantly, the scaling up of climate-smart agriculture technologies and practices can tackle the malnutrition and stunting challenge of the region through more productive and resilient food systems. At the same time, climate-smart agricultural technologies can help store carbon in the soil and reduce the pressure on land-use change by improving efficiency and reducing food waste.

“Africa absolutely cannot afford a 2.4 o C warmer world: At that level of warming, adaptation measures in many parts of the continent may not be technically feasible or financially viable.”

Third, Africa needs a decisive push to build capacity in climate change action, not only in ministries of the environment but throughout society. The engineers and urban planners need to incorporate climate considerations in designing and constructing Africa’s infrastructure. African farmers need the best data and knowledge to make informed decisions to increase productivity in the face of a rapidly changing climate that is already impacting their crops. Low-income urban households and rural communities need to know what actions to take to better protect their lives and livelihoods against more frequent and intense climate shocks.

Fourth, leaders must pursue the win-win opportunity of rapidly deploying the global carbon market, while helping Africa enter this market, especially with programs that straddle both climate mitigation and adaptation. Nature-based solutions, energy access programs, and blue and green economy platforms can push forward the enhanced resilience of the region while supporting global emission reduction goals.

“The landmark African Continental Free Trade Agreement can provide the foundation for early agreements on free trade of agricultural products that can balance losses caused by climate shocks.”

At the same time, Africa cannot wait. It must use all its tools to mainstream adaptation in its development path. With the pandemic still causing economic and livelihood damages in every corner of the continent, this task will be harder than ever. Still, low-cost, high-return adaptation measures should be prioritized. These range from land use and simple early warning systems to infrastructure maintenance that can reduce flood damage and protection of environmental assets that protect lives and livelihoods. Importantly, the landmark African Continental Free Trade Agreement can provide the foundation for early agreements on free trade of agricultural products that can balance losses caused by climate shocks.

At Sharm el-Sheikh, at the Africa COP, the world must take advantage of the opportunity to fulfill its responsibility together with Africa. A prosperous future of hundreds of millions of Africans will depend on the decisions and actions taken at COP27. A green and resilient path for Africa’s development cannot wait.

By Jeanine Mabunda Lioko

Jeanine Mabunda Lioko offers recommendations for African policymakers looking to balance sustainable development and universal access to electricity.

By Amar Bhattacharya

Amar Bhattacharya reviews financing strategies for Africa to adapt to and mitigate the impacts of climate change.

By Yvonne Aki-Sawyerr

Freetown Mayor Yvonne Aki-Sawyerr shares examples of how African cities can implement climate change adaptation and mitigation projects.

By Amara Nwankpa

Amara Nwankpa explores the impacts of the climate crisis on food insecurity in Nigeria and offers a framework for reducing food and nutrition vulnerability while enhancing environmental resilience.

Climate migration—deepening our solutions

By Simeon K. Ehui and Kanta Kumari Rigaud

Simeon K. Ehui and Kanta Kumari Rigaud underscore the need for bold, transformative, and foresighted action to address climate-related migration in sub-Saharan Africa.

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By Holger A. Kray, Chakib Jenane, Ede Ijjasz-Vasquez, and Jamal Saghir

Kray, Jenane, Ijjasz-Vasquez, and Saghir estimate the impact of climate change on the future of food security in Africa.

Next Chapter

05 | Technological innovations

Creating and harnessing tools for improved livelihoods

Foresight Africa: Top priorities for Africa in 2022

On January 26, AGI will host a Foresight Africa launch featuring a high-level panel of leading Africa experts to offer insights on regional trends along with recommendations for national governments, regional organizations, multilateral institutions, the private sector, and civil society actors as they forge ahead in 2022.

Africa in Focus

Join the conversation on the top priorities for Africa in 2022

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The Foresight Africa podcast celebrates Africa’s dynamism and explores strategies for broadening the benefits of growth to all people of Africa.

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What Are the Effects of Climate Change?

A rapidly warming planet poses an existential threat to all life on earth. Just how bad it gets depends on how quickly we act.

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An area flooded by Super Typhoon Noru in the Bulacan Province of the Philippines, September 26, 2022

Rouelle Umali/Xinhua via Getty Images

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Climate change is our planet’s greatest existential threat . If we don’t limit greenhouse gas emissions from the burning of fossil fuels, the consequences of rising global temperatures include massive crop and fishery collapse, the disappearance of hundreds of thousands of species, and entire communities becoming uninhabitable. While these outcomes may still be avoidable, climate change is already causing suffering and death. From raging wildfires and supercharged storms, its compounding effects can be felt today, outside our own windows.

Understanding these impacts can help us prepare for what’s here, what’s avoidable, and what’s yet to come, and to better prepare and protect all communities. Even though everyone is or will be affected by climate change, those living in the world’s poorest countries—which have contributed least to the problem—are the most climate-vulnerable. They have the fewest financial resources to respond to crises or adapt, and they’re closely dependent on a healthy, thriving natural world for food and income. Similarly, in the United States, it is most often low-income communities and communities of color that are on the frontlines of climate impacts. And because climate change and rising inequality are interconnected crises, decision makers must take action to combat both—and all of us must fight for climate justice. Here’s what you need to know about what we’re up against.

Effects of climate change on weather

Effects of climate change on the environment, effects of climate change on agriculture, effects of climate change on animals, effects of climate change on humans, future effects of climate change.

As global temperatures climb, widespread shifts in weather systems occur, making events like droughts , hurricanes , and floods more intense and unpredictable. Extreme weather events that may have hit just once in our grandparents’ lifetimes are becoming more common in ours. However, not every place will experience the same effects: Climate change may cause severe drought in one region while making floods more likely in another.

Already, the planet has warmed 1.1 degrees Celsius (1.9 degrees Fahrenheit) since the preindustrial era began 250 years ago, according to the Intergovernmental Panel on Climate Change (IPCC) . And scientists warn it could reach a worst-case scenario of 4 degrees Celsius (7.2 degrees Fahrenheit) by 2100 if we fail to tackle the causes of climate change —namely, the burning of fossil fuels (coal, oil, and gas) .

Tokyo during a record-breaking heat wave, August 13, 2020

The Yomiuri Shimbun via AP Images

Higher average temperatures

This change in global average temperature—seemingly small but consequential and climbing—means that, each summer, we are likely to experience increasingly sweltering heat waves. Even local news meteorologists are starting to connect strings of record-breaking days to new long-term trends, which are especially problematic in regions where infrastructure and housing have not been built with intensifying heat in mind. And heat waves aren’t just uncomfortable—they’re the leading cause of weather-related fatalities in the United States.

Longer-lasting droughts

Hotter temperatures increase the rate at which water evaporates from the air, leading to more severe and pervasive droughts . Already, climate change has pushed the American West into a severe “megadrought”—the driest 22-year stretch recorded in at least 1,200 years—shrinking drinking water supplies, withering crops , and making forests more susceptible to insect infestations. Drought can also create a positive feedback loop in which drier soil and less plant cover cause even faster evaporation.

More intense wildfires

This drier, hotter climate also creates conditions that fuel more vicious wildfire seasons—with fires that spread faster and burn longer—putting millions of additional lives and homes at risk. The number of large wildfires doubled between 1984 and 2015 in the western United States. And in California alone, the annual area burned by wildfires increased 500 percent between 1972 and 2018.

Multiple rafts and boats travel through floodwaters on a multi-lane roadway, along with people walking in the waist-high water

Evacuation after Hurricane Harvey in Houston, August 28, 2017

David J. Phillip/AP Photo

Stronger storms

Warmer air also holds more moisture, making tropical cyclones wetter, stronger, and more capable of rapidly intensifying. In the latest report from the IPCC , scientists found that daily rainfall during extreme precipitation events would increase by about 7 percent for each degree Celsius of global warming, increasing the dangers of flooding . The frequency of severe Category 4 and 5 hurricanes is also expected to increase. In 2017, Hurricane Harvey, a devastating Category 4 storm, dumped a record 275 trillion pounds of rain and resulted in dozens of deaths in the Houston area.

From the poles to the tropics, climate change is disrupting ecosystems. Even a seemingly slight shift in temperature can cause dramatic changes that ripple through food webs and the environment.

Small chunks of ice melting in a body of water, with low, snowy mountains in the background

The lake at Jökulsárlón, a glacial lagoon in Iceland, which has grown because of continued glacial melting

Eskinder Debebe/UN Photo

Melting sea ice

The effects of climate change are most apparent in the world’s coldest regions—the poles. The Arctic is heating up twice as fast as anywhere else on earth, leading to the rapid melting of glaciers and polar ice sheets, where a massive amount of water is stored. As sea ice melts, darker ocean waters that absorb more sunlight become exposed, creating a positive feedback loop that speeds up the melting process. In just 15 years, the Arctic could be entirely ice-free in the summer.

Sea level rise

Scientists predict that melting sea ice and glaciers, as well as the fact that warmer water expands in volume, could cause sea levels to rise as much as 6.6 feet by the end of the century, should we fail to curb emissions. The extent (and pace) of this change would devastate low-lying regions, including island nations and densely populated coastal cities like New York City and Mumbai.

But sea level rise at far lower levels is still costly, dangerous, and disruptive. According to the 2022 Sea Level Rise Technical Report from the National Ocean Service, the United States will see a foot of sea level rise by 2050, which will regularly damage infrastructure, like roads, sewage treatment plants, and even power plants . Beaches that families have grown up visiting may be gone by the end of the century. Sea level rise also harms the environment, as encroaching seawater can both erode coastal ecosystems and invade freshwater inland aquifers, which we rely on for agriculture and drinking water. Saltwater incursion is already reshaping life in nations like Bangladesh , where one-quarter of the lands lie less than 7 feet above sea level.

People with umbrellas walk on a street through ankle-deep water

A waterlogged road, caused by rainstorm and upstream flood discharge, in the Shaoguan, Guangdong Province of China, June 21, 2022

Stringer/Anadolu Agency via Getty Images

In addition to coastal flooding caused by sea level rise, climate change influences the factors that result in inland and urban flooding: snowmelt and heavy rain. As global warming continues to both exacerbate sea level rise and extreme weather, our nation’s floodplains are expected to grow by approximately 45 percent by 2100. In 2022, deadly flooding in Pakistan—which inundated as much as a third of the country—resulted from torrential rains mixed with melting glaciers and snow.

Warmer ocean waters and marine heat waves

Oceans are taking the brunt of our climate crisis. Covering more than 70 percent of the planet’s surface, oceans absorb 93 percent of all the heat that’s trapped by greenhouse gases and up to 30 percent of all the carbon dioxide emitted from burning fossil fuels.

Temperature-sensitive fish and other marine life are already changing migration patterns toward cooler and deeper waters to survive, sending food webs and important commercial fisheries into disarray. And the frequency of marine heat waves has increased by more than a third . These spikes have led to mass die-offs of plankton and marine mammals.

To make matters worse, the elevated absorption of carbon dioxide by the ocean leads to its gradual acidification , which alters the fundamental chemical makeup of the water and threatens marine life that has evolved to live in a narrow pH band. Animals like corals, oysters, and mussels will likely feel these effects first, as acidification disrupts the calcification process required to build their shells.

Ecosystem stressors

Land-based ecosystems—from old-growth forests to savannahs to tropical rainforests—are faring no better. Climate change is likely to increase outbreaks of pests, invasive species, and pathogen infections in forests. It’s changing the kinds of vegetation that can thrive in a given region and disrupting the life cycles of wildlife, all of which is changing the composition of ecosystems and making them less resilient to stressors. While ecosystems have the capacity to adapt, many are reaching the hard limits of that natural capacity . More repercussions will follow as temperatures rise.

Climate change appears to be triggering a series of cascading ecological changes that we can neither fully predict nor, once they have enough momentum, fully stop. This ecosystem destabilization may be most apparent when it comes to keystone species that have an outsize- role in holding up an ecosystem’s structure.

An aerial view two people standing in a large field covered by a coffee plants

Coffee plants destroyed by frost due to extremely low temperatures near Caconde in the São Paulo state of Brazil, August 25, 2021

Jonne Roriz/Bloomberg via Getty Images

Less predictable growing seasons

In a warming world, farming crops is more unpredictable—and livestock, which are sensitive to extreme weather, become harder to raise. Climate change shifts precipitation patterns, causing unpredictable floods and longer-lasting droughts. More frequent and severe hurricanes can devastate an entire season’s worth of crops. Meanwhile, the dynamics of pests, pathogens, and invasive species—all of which are costly for farmers to manage—are also expected to become harder to predict. This is bad news, given that most of the world’s farms are small and family-run. One bad drought or flood could decimate an entire season’s crop or herd. For example, in June 2022, a triple-digit heat wave in Kansas wiped out thousands of cows. While the regenerative agriculture movement is empowering rural communities to make their lands more resilient to climate change, unfortunately, not all communities can equitably access the support services that can help them embrace these more sustainable farming tactics.

Reduced soil health

Healthy soil has good moisture and mineral content and is teeming with bugs, bacteria, fungi, and microbes that in turn contribute to healthy crops. But climate change, particularly extreme heat and changes in precipitation, can degrade soil quality. These impacts are exacerbated in areas where industrial, chemical-dependent monoculture farming has made soil and crops less able to withstand environmental changes.

Food shortages

Ultimately, impacts to our agricultural systems pose a direct threat to the global food supply. And food shortages and price hikes driven by climate change will not affect everyone equally: Wealthier people will continue to have more options for accessing food, while potentially billions of others will be plummeted into food insecurity—adding to the billions that already have moderate or severe difficulty getting enough to eat.

The poison dart frog’s survival is currently threatened by habitat loss and climate change.

Chris Mattison/Minden Pictures

It’s about far more than just the polar bears: Half of all animal species in the world’s most biodiverse places, like the Amazon rainforest and the Galapagos Islands, are at risk of extinction from climate change. And climate change is threatening species that are already suffering from the biodiversity crisis, which is driven primarily by changes in land and ocean use (like converting wild places to farmland) and direct exploitation of species (like overfishing and wildlife trade). With species already in rough shape—more than 500,000 species have insufficient habitat for long-term survival—unchecked climate change is poised to push millions over the edge.

Climate change rapidly and fundamentally alters (or in some cases, destroys) the habitat that wildlife have incrementally adapted to over millennia. This is especially harmful for species’ habitats that are currently under threat from other causes. Ice-dependent mammals like walruses and penguins, for example, won’t fare well as ice sheets shrink. Rapid shifts in ocean temperatures stress the algae that nourishes coral reefs, causing reefs to starve—an increasingly common phenomenon known as coral bleaching . Disappearing wetlands in the Midwest’s Prairie Pothole Region means the loss of watering holes and breeding grounds for millions of migratory birds. (Many species are now struggling to survive, as more than 85 percent of wetlands have been lost since 1700). And sea level rise will inundate or erode away many coastal habitats, where hundreds of species of birds, invertebrates, and other marine species live.

Many species’ behaviors—mating, feeding, migration—are closely tied to subtle seasonal shifts, as in temperature , precipitation level, and foliage. In some cases, changes to the environment are happening quicker than species are able to adapt. When the types and quantity of plant life change across a region, or when certain species bloom or hatch earlier or later than in the past, it impacts food and water supplies and reverberates up food chains.

A thick smog hangs over a mostly-deserted city street.

Wildfire smoke–filled air in Multnomah County, Oregon, September 16, 2020

Motoya Nakamura/Multnomah County Communications, CC BY NC-ND 4.0

Ultimately, the way climate change impacts weather, the environment, animals, and agriculture affects humanity as well. But there’s more. Around the world, our ways of life—from how we get our food to the industries around which our economies are based—have all developed in the context of relatively stable climates. As global warming shakes this foundation, it promises to alter the very fabric of society. At worst, this could lead to widespread famine, disease, war, displacement , injury, and death. For many around the world, this grim forecast is already their reality. In this way, climate change poses an existential threat to all human life.

Human health

Climate change worsens air quality . It increases exposure to hazardous wildfire smoke and ozone smog triggered by warmer conditions, both of which harm our health, particularly for those with pre-existing illnesses like asthma or heart disease.

Insect-borne diseases like malaria and Zika become more prevalent in a warming world as their carriers are able to exist in more regions or thrive for longer seasons. In the past 30 years, the incidence of Lyme disease from ticks has nearly doubled in the United States, according to the U.S. Environmental Protection Agency (EPA). Thousands of people face injury, illness , and death every year from more frequent or more intense extreme weather events. At a 2-degree Celsius rise in global average temperature, an estimated one billion people will face heat stress risk. In the summer of 2022 alone, thousands died in record-shattering heat waves across Europe. Weeks later, dozens were killed by record-breaking urban flooding in the United States and South Korea—and more than 1,500 people perished in the flooding in Pakistan , where resulting stagnant water and unsanitary conditions threaten even more.

The effects of climate change—and the looming threat of what’s yet to come—take a significant toll on mental health too. One 2021 study on climate anxiety, published in the journal Nature , surveyed 10,000 young people from 10 different countries. Forty-five percent of respondents said that their feelings about climate change, varying from anxiety to powerlessness to anger, impacted their daily lives.

A girl sits on a hospital bed that is covered in blue netting.

A patient with dengue fever, a mosquito-borne disease, in Karachi, Pakistan, where the spread of diseases worsened due to flooding, September 2022

Fareed Khan/AP Photo

Worsening inequity

The climate crisis exacerbates existing inequities. Though wealthy nations, such as the United States, have emitted the lion’s share of historical greenhouse gas emissions, it’s developing countries that may lack the resources to adapt and will now bear the brunt of the climate crisis. In some cases, low-lying island nations—like many in the Pacific —may cease to exist before developed economies make meaningful reductions to their carbon emissions.

Even within wealthier nations, disparities will continue to grow between those rich enough to shield themselves from the realities of climate change and those who cannot. Those with ample resources will not be displaced from their homes by wars over food or water—at least not right away. They will have homes with cool air during heat waves and be able to easily evacuate when a hurricane is headed their way. They will be able to buy increasingly expensive food and access treatment for respiratory illness caused by wildfire smoke. Billions of others can’t—and are paying the highest price for climate pollution they did not produce.

Hurricane Katrina, for example, displaced more than one million people around the Gulf Coast. But in New Orleans , where redlining practices promoted racial and economic segregation, the city’s more affluent areas tended to be located on higher ground—and those residents were able to return and rebuild much faster than others.

Displacement

Climate change will drive displacement due to impacts like food and water scarcities, sea level rise, and economic instability. It’s already happening. The United Nations Global Compact on Refugees recognizes that “climate, environmental degradation and disasters increasingly interact with the drivers of refugee movements.” Again, communities with the fewest resources—including those facing political instability and poverty—will feel the effects first and most devastatingly.

The walls of a small room are pulled down to the studs, with debris and mold visible on the floor.

A flood-damaged home in Queens, New York, December 1, 2021

K.C. Wilsey/FEMA

Economic impacts

According to the 2018 National Climate Assessment, unless action is taken, climate change will cost the U.S. economy as much as $500 billion per year by the end of the century. And that doesn’t even include its enormous impacts on human health . Entire local industries—from commercial fishing to tourism to husbandry—are at risk of collapsing, along with the economic support they provide.

Recovering from the destruction wrought by extreme weather like hurricanes, flash floods, and wildfires is also getting more expensive every year. In 2021, the price tag of weather disasters in the United States totaled $145 billion —the third-costliest year on record, including a number of billion-dollar weather events.

The first wave of impacts can already be felt in our communities and seen on the nightly news. The World Health Organization says that in the near future, between 2030 and 2050, climate change is expected to cause an additional 250,000 deaths per year from things like malnutrition, insect-borne diseases, and heat stress. And the World Bank estimates that climate change could displace more than 140 million people within their home countries in sub-Saharan Africa, South Asia, and Latin America by 2050.

But the degree to which the climate crisis upends our lives depends on whether global leaders decide to chart a different course. If we fail to curb greenhouse gas emissions, scientists predict a catastrophic 4.3 degrees Celsius , (or around 8 degrees Fahrenheit) of warming by the end of the century. What would a world that warm look like? Wars over water. Crowded hospitals to contend with spreading disease. Collapsed fisheries. Dead coral reefs. Even more lethal heat waves. These are just some of the impacts predicted by climate scientists .

Workers move a large solar panel into place in a row on the shore of a lake

Solar panel installation at a floating photovoltaic plant on a lake in Haltern am See, Germany, April 2022

Martin Meissner/AP Photo

Climate mitigation, or our ability to reverse climate change and undo its widespread effects, hinges on the successful enactment of policies that yield deep cuts to carbon pollution, end our dependence on dangerous fossil fuels and the deadly air pollution they generate, and prioritize the people and ecosystems on the frontlines. And these actions must be taken quickly in order to ensure a healthier present day and future. In one of its latest reports, the IPCC presented its most optimistic emissions scenario, in which the world only briefly surpasses 1.5 degrees of warming but sequestration measures cause it to dip back below by 2100. Climate adaptation , a term that refers to coping with climate impacts, is no longer optional ; it’s necessary, particularly for the world’s most vulnerable populations.

By following the urgent warnings of the IPCC and limiting warming, we may be able to avoid passing some of the critical thresholds that, once crossed, can lead to potentially irreversible, catastrophic impacts for the planet, including more warming. These thresholds are known as climate tipping points and refer to when a natural system "tips" into an entirely different state. One example would be Arctic permafrost, which stores carbon like a freezer: As the permafrost melts from warming temperatures, it releases carbon dioxide into the atmosphere.

Importantly, climate action is not a binary pass-fail test. Every fraction of a degree of warming that we prevent will reduce human suffering and death, and keep more of the planet’s natural systems intact. The good news is that a wide range of solutions exist to sharply reduce emissions, slow the pace of warming, and protect communities on the frontlines of climate impacts. Climate leaders the world over—those on major political stages as well as grassroots community activists—are offering up alternative models to systems that prioritize polluters over people. Many of these solutions are rooted in ancestral and Indigenous understandings of the natural world and have existed for millennia. Some solutions require major investments into clean, renewable energy and sustainable technologies. To be successful, climate solutions must also address intersecting crises—like poverty, racism, and gender inequality —that compound and drive the causes and impacts of the climate crisis. A combination of human ingenuity and immense political will can help us get there.

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The Intricacies of Temperature in Tropical Rainforests: a Closer Look

This essay is about the temperature range in tropical rainforests and its crucial role in sustaining their rich biodiversity. Found near the equator in regions like the Amazon Basin the Congo Basin and Southeast Asia these rainforests maintain a stable temperature range of 20 to 25 degrees Celsius (68 to 77 degrees Fahrenheit) year-round. The dense canopy high humidity and constant evapotranspiration contribute to this stability. However climate change threatens this balance by causing temperature fluctuations leading to severe droughts increased tree mortality and more frequent forest fires. To protect these vital ecosystems conservation efforts must focus on maintaining temperature stability through preserving large forest areas reforestation projects and reducing global greenhouse gas emissions.

How it works

Some of the most beautiful places on Earth are tropical jungles. These environments are full of life and variety and a lot of that is thanks to the climate they live in especially the temperature changes. We need to learn more about how these jungles’ temperatures change over time in order to fully understand how they work and the problems they face.

Near the equator in places like the Amazon Basin in South America the Congo Basin in Africa and some parts of Southeast Asia you can find tropical jungles.

The weather in these places is warm all year long; temperatures usually stay between 20 and 25 degrees Celsius (68 and 77 degrees Fahrenheit). This small range of temperatures that doesn’t change much with the seasons is what makes tropical jungles unique. It can get very cold in the winter and very warm in the summer in moderate zones but these jungles stay warm all year.

The thick foliage of the jungle is a big part of why the temperature stays the same. The cover takes in and spreads out the sun like a big tent and it also keeps heat in. This makes the temperature changes between day and night more even. A lot also has to do with high humidity which is often over 80%. The temperatures are always warm because moist air holds heat better than dry air. Evapotranspiration the process by which water moves from the ground to the air through evaporation and plant transpiration also happens all the time and helps keep the temperature fixed.

This steady warmth is important for the rainforest’s complicated environment not just nice to have. A lot of different plant and animal types can live in the warm stable temperature. For example high temperatures make the breakdown of organic matter go faster. This adds nutrients to the soil that plants can use right away. This fast cycle of nutrients is very important for keeping the lush plants that make these woods unique. Also the steady warmth lets animals and plants grow and reproduce all year which helps create the amazing variety of life that can be found in these areas.

Climate change on the other hand is putting this delicate balance in more danger. Even in these areas where temperatures are usually steady global warming is changing the way they stay that way. Even small rises in normal temperatures can have big impacts. For instance warmer temperatures can throw off the balance between temperature and wetness which can cause droughts to happen more often and be worse. This puts stress on the plants which in turn affects the animals that eat and live in those plants. Changing temperatures and humidity can also make jungles more open to diseases and exotic species which is bad for biodiversity even more.

Some tropical jungles are already seeing the effects of these changes in temperature. In the Amazon for example higher temperatures and longer dry seasons have been linked to more forest fires and more trees dying. Large parts of the forest can be destroyed by these fires which release huge amounts of carbon dioxide into the air and make global warming worse. Additionally cutting down trees makes the jungle less able to take in carbon dioxide which starts a loop that speeds up climate change.

Keeping temperatures stable is very important if we want to lessen the effects of climate change on lush jungles. To keep the natural temperature control that the foliage and humidity provide conservation efforts should focus on saving big complete forest areas. Reforestation and afforestation projects can also help fix up areas that have been damaged making them more resistant to changes in weather. Getting rid of greenhouse gas emissions around the world is also important to stop temperatures from rising even more which could overwhelm exotic jungles.

In conclusion the range of temperatures in tropical jungles is an important part of their ecosystems because it gives them the security they need to grow. The constant warmth helps with fast food cycle a lot of different kinds of life and growth and breeding all year long. But climate change is a big danger to this security which could have very bad effects on the health and variety of the jungle. To protect these important environments we need to do a lot of different things like protection repair and working together to lower greenhouse gas emissions around the world. We can only hope to protect the complex and fragile balance of tropical jungles if everyone works together.

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A Civilized Society Argument for Mitigating Anthropogenic Climate Change

Kumar, Sanjiv

Key message: A paradigm shift in the climate change debate is needed: from comparing anthropogenic climate change with natural variability to simply determining if the observed climate signal or a portion of it is from anthropogenic origin. While global warming is an important metric for climate change, 'the anthropogenic interference in the climate system and, therefore its mitigation' can be a better societally relevant metric to combat climate change. This paradigm shift will encourage citizens and governments to act against anthropogenic climate change as part of their civic responsibilities and fundamental duties. Scientific Contribution: This essay makes an important distinction between natural climate variability and anthropogenic climate change in light of a civilized society's most fundamental principle, which is a promise to provide a fair and just natural life cycle to all people. I scientifically show why anthropogenic climate change does not fit into the civilized society's promise. Natural variability is random, and the system eventually goes back to the initial equilibrium state. Anthropogenic climate forcing, in contrast, is continuously increasing, and the system may not return to the same initial equilibrium state but a new unprecedented one. Hence, anthropogenic climate change and natural climate variability are characteristically very different, forcing on the climate system. I will show data, including state-of-the-art Earth System Model outputs emphasizing the characteristic difference between natural climate variability and anthropogenic climate change. A long-term goal: This essay presents a fundamentally new perspective on combating anthropogenic climate change through Science, Technology, and Partnership. The outlined perspective aims to change climate debates over the next several years. For example, if 'clean water, clean air, and healthy soil' becomes part of every citizen's fundamental environmental right, then it has the potential to change the world for the better in terms of environmental protection and mitigating anthropogenic climate change. Hence, it is necessary to start a discussion in this new direction.

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Published: 03 July 2024

Strategies to improve the impact of the IPCC Special Report on Climate Change and Cities

William Solecki ORCID: orcid.org/0000-0003-1256-4738 1 ,
Debra Roberts 2 &
Karen C. Seto ORCID: orcid.org/0000-0002-4928-2446 3

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The planned Special Report on Climate Change and Cities represents a key opportunity to connect the IPCC assessment process to the topics of cities and global urbanization, which are both critical elements of climate adaptation and mitigation during the current ‘decade of action’. To help seize this opportunity, we recommend the development of inreach and outreach strategies that can help the report to have greater impact. The new strategies could allow interest groups, including practitioners and policymakers, along with researchers and IPCC representatives to be more coordinated and enhance the utilization of the assessment results. These advances would be useful not only for the upcoming Special Report but also for future IPCC reports and other comparable scientific assessments.

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Cities and regions tackle climate change mitigation but often focus on less effective solutions

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Special thanks to M. Garschagen, LMU University Munich, for providing comments on earlier draft of this paper. Additional special thanks to C. Overton, City University of New York, for editorial work on the paper.

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Solecki, W., Roberts, D. & Seto, K.C. Strategies to improve the impact of the IPCC Special Report on Climate Change and Cities . Nat. Clim. Chang. (2024). https://doi.org/10.1038/s41558-024-02060-9

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A general hospital in Mysuru. iStock photo for representation

On Earth Day 2024, India should seriously consider fortifying its health system against climate-induced challenges

Rising global temperatures have triggered a cascade of impacts on human life, setting in motion a chain of reactions that have disrupted food production cycles, altered weather patterns, and lead to natural disasters and population displacement. This profound shift in climate dynamics exerts a compounding effect on public health, rippling through communities with multi-layered consequences.

India, from its bustling urban centres to remote rural regions, now stands at a pivotal moment, as it confronts the realities of climate change. Heatwaves, droughts, and floods have become increasingly common occurrences, posing significant challenges to the health and well-being of communities. In urban areas, where population density is high and infrastructure strains under the weight of rapid urbanisation, the effects of extreme heat are particularly pronounced. The lack of adequate green spaces, coupled with the heat-retaining properties of concrete jungles, exacerbates the urban heat island effect, further intensifying the heat stress. Meanwhile, rural communities, often marginalised and with limited access to essential services, face their own set of challenges during extreme weather events. Inadequate infrastructure, including poorly constructed housing and limited access to clean water and sanitation facilities, leaves rural populations highly vulnerable to the impacts of climate change.

Climate change sets the stage for the spread of parasitic and infectious diseases, reshaping the distribution of disease vectors and expanding the geographic footprint of illnesses. A study concluded by The Lancet Planetary Health indicated that mosquito-borne diseases earlier concentrated in eastern and southeastern India have found newer breeding grounds in higher altitude regions experiencing shifts in rainfall and temperature patterns. This expansion of disease vectors increases the risk of parasitic and pathogenic transmission, as evidenced by the recent emergence of Kyasanur Forest Disease (KFD) in Karnataka . Such instances underscore the urgent need for proactive measures to safeguard public health amidst changing climatic conditions.

Climate change’s impacts extend beyond the physical realm to affect mental health, an aspect often overlooked. A scientific assessment by the US Global Change Research Program (GCRP) in 2016 suggested events such as floods, droughts, and cyclones can trigger anxiety, depression, and post-traumatic stress disorder. Exposure to extreme heat can exacerbate aggressive behaviour, substance use, and mood disorders. Additionally, researchers have found that climate change indirectly affects mental health through nutrient deficiencies, particularly that of iron and zinc . Higher temperatures accelerate crop maturation, diminishing the absorption of essential nutrients and increasing susceptibility to disorders like depression, psychosis, and bipolar disorder.

As ramifications of climate change have become increasingly apparent in public health, the imperative for proactive measures intensifies. According to Poonam Khetrapal Singh , Regional Director of the World Health Organization for Southeast Asia, healthcare systems must now anticipate, respond to, cope with, recover from, and adapt to climate-related shocks and stress. Developing climate-resilient health systems is crucial in this effort. Thus, India building a climate-resilient health system is not only an overdue necessity to tackle climate change but a key to achieving its broader goals of health equity and inclusivity for all.

Building resilience

Developing a climate-resilient health system demands enhancing primary healthcare services to handle potential surges in demand and fostering adaptable supply chains. Climate-resilient infrastructure and technologies can play a crucial role in achieving these goals. Firstly, by adapting existing processes to anticipate and address current and future climate risks, such as heightened heatwaves and extreme weather events like cyclones and storms. This practice involves aligning the location of health facilities and construction codes accordingly while also evaluating the resilience of essential services like water, sanitation, and electricity supply. Secondly, by advocating for the adoption of new technologies, such as advanced information management systems , to analyse the interplay between environmental factors and health data. Integration of these technologies into disease surveillance systems facilitates vulnerability assessment, adaptation, and early warning capabilities. Furthermore, prioritising medical technologies with lower environmental footprints enhances climate resilience and long-term sustainability.

Additionally, gridded mapping techniques offer a valuable tool for visualising spatial data and identifying vulnerable areas where interventions are most urgently needed. By mapping climate change projections alongside socio-economic indicators and health data, policymakers and public health officials can prioritise interventions and allocate resources more effectively, thereby enhancing the resilience of health systems and communities.

Bolstering the capacity of the healthcare workforce emerges as another fundamental element for creating a climate-resilient health system. To achieve this, interventions are again required on two fronts. First, adequately sensitising these professionals to recognise the various health vulnerabilities posed by climate change. Integrating a module on the health impacts of climate change in the medical and allied professionals’ curriculum could be instrumental in this regard. Second, building the capacity of healthcare workers through training and knowledge management programmes, so that they are better equipped to respond to climate-related risks and diseases.

In light of the escalating impact of climate change on public health, urgent action is paramount. India’s diverse and vulnerable population magnifies the stakes, underscoring the critical need for collaborative efforts among policymakers, healthcare professionals, and communities. It is time to fortify our health system against climate-induced challenges by integrating climate considerations into healthcare planning, bolstering disease surveillance, and enhancing healthcare infrastructure. Through proactive measures, India can ensure the well-being of its citizens and chart a path towards a healthier, more sustainable future.

Priyanshi Shrivastava and Anuj Pattanayak are Junior Associates at Chase India

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Climate change is pushing up food prices — and worrying central banks

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Sixty years ago, when Giuseppe Divita’s grandparents opened their olive mill in Chiaramonte Gulfi, Sicily, the Italian island’s climate was ideal for producing the fruit.

This is no longer the case, says Divita, who, alongside his brother, runs Oleificio Guccione, which today has its own groves as well as the mill. With average annual temperatures climbing and rainfall dwindling, growing olives and turning them into oil is becoming increasingly difficult.

Throughout the Mediterranean, reduced yields and higher input costs for olive producers have pushed up prices to 20-year highs this year. The production problems are only going to get worse as the effects of climate become more acute, predicts Divita.

For millennia, food production and pricing have been disrupted by the weather, with one-off events such as heatwaves, droughts, flooding or frosts cutting harvests and raising prices. War and disease are also factors, as the world saw recently after Russia’s invasion of Ukraine, and the swine fever that swept through China’s pig population.

But another, more sustained thread has run through many sharp increases in food prices. From oranges in Brazil to cocoa in west Africa; olives in southern Europe to coffee in Vietnam, permanently shifting weather patterns as a result of climate change are reducing crop yields, squeezing supplies and driving up prices.

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Adam Davis, co-founder of global agricultural hedge fund Farrer Capital, says climate change has helped drive up prices for a long list of food commodities trading at higher levels this year. “Wheat is up 17 per cent, palm oil 23 per cent . . . sugar 9 per cent and pork 21 per cent,” he says. For the consumer, the “lag effect of those high commodity prices is not going away”.

A third of the food price increases in the UK in 2023 was down to climate change, according to the Energy and Climate Intelligence Unit think-tank.

“There’s a material impact from climate change on global food prices,” says Frederic Neumann, chief Asia economist at HSBC. “It’s easy to shrug off individual events as being isolated, but we’ve just seen such a sequence of abnormal events and disruptions that, of course, add up to climate change impact.”

Such repeated events result in “a permanent impact on the ability to supply food,” argues Neumann. Food price rises once considered temporary are becoming a source of persistent inflationary pressure.

Globally, annual food inflation rates could rise by up to 3.2 percentage points per year within the next decade or so as a result of higher temperatures, according to a recent study by the European Central Bank and the Potsdam Institute for Climate Impact Research.

Guccione’s olive groves in Chiaramonte Gulfi, Sicily

This will mean an increase in annual overall inflation of up to 1.18 percentage points by 2035, found the study, which used historic data from 121 countries from 1996 to 2021 to model future inflation scenarios. The global south stands to be the worst affected.

The question is how monetary policy should reflect this. Many central banks exclude food and energy prices from so-called core inflation, the measure they watch most closely, owing to their volatility.

But now that climate change is starting to cause sustained inflationary pressure, debate is growing over whether rate-setters should pay more heed — not least because the impact of rising food prices is felt keenly by ordinary citizens.

David Barmes, policy fellow at the London School of Economics’ Grantham Research Institute on Climate Change and the Environment, says regarding spikes in food inflation as temporary “is not really going to be a useful approach any more, if the price shocks are repeated and frequent and will affect headline inflation in a more persistent way”.

Neumann predicts that more frequent interruptions to food supply “will force central banks to respond, leading to more volatile interest rates, and possibly higher interest rates over time”.

The world is on track for a temperature rise of up to 2.9C above pre-industrial levels — almost double a target agreed at the 2015 Paris climate talks, according to a recent report published by the UN environment programme.

The pace of this warming is also increasing, defying even climate scientists’ expectations . Last year was the hottest year on record, but may be eclipsed by the current one as temperatures soar to nearly 50C in India and Europe braces itself for another scorching summer.

Agriculture is one of the sectors most directly affected. Over the next decade, some of the world’s most globally important crops may be in short supply as rising temperatures and more frequent extreme weather events hamper harvests.

Wheat yields, for example, are drastically reduced once spring temperatures exceed 27.8C, yet a recent study found that the major wheat-growing regions of China and the US were experiencing temperatures well in excess of this increasingly frequently.

Heatwaves that were expected to occur once every hundred years in 1981 are now expected every six years in the Midwestern US and every 16 years in northeastern China, according to the research by the Friedman School of Nutrition Science and Policy at Tufts University.

Rice, soyabeans, corn and potatoes are among other staples that could see yields plummet. For many crops, higher temperatures mean lower yields. “They have pretty stable productivity up to temperatures between 20C and 30C, depending on the crop,” says Friderike Kuik, an economist, who led the ECB study. “Beyond that, we see quite sharp declines.”

This fall in productivity leads to high food prices, she adds. “It’s just simple supply and demand.”

They have pretty stable productivity up to temperatures between 20C and 30C, depending on the crop. Beyond that, we see quite sharp declines Friderike Kuik, ECB economist

Extreme weather events, including droughts, floods and storms, that are becoming increasingly frequent also have knock-on effects.

Flooding in Pakistan in 2022 decimated the country’s rice fields, while climate change has compounded the effects of the El Niño sea temperature phenomenon, which returned last year, resulting in low yields of sugar, coffee and cocoa .

The changes in climate and weather patterns are also altering growing seasons and creating new pressures from pests and diseases. In Ghana and Ivory Coast, which produce two-thirds of the world’s cocoa beans , heavy rainfall last summer created the humid conditions perfect for black pod disease — a fungal infection which rots cocoa pods — to thrive.

This, coupled with other diseases and poor weather, knocked yields and led to a global crop more than 10 per cent smaller than the year before.

For farmers, the challenges posed by climate change mean higher input costs. Land that once produced ample crops from rainwater now needs to be irrigated and more pesticides are needed to keep diseases and bugs at bay.

Workers prepare a combine harvester at a soyabean field in Waynesfield, Ohio

In Sicily, with temperatures reaching 40C during harvest, the Divita brothers have had to introduce special chilling machinery. Hotter weather also affects labour productivity, increasing production costs that are passed on to consumers as higher prices.

Estimating the extent of this impact is challenging, says William Hynes, senior climate change economist at the World Bank. As in the case of the ECB study, most empirical literature looks at temperature increases because the data is readily available. But Hynes says there are numerous other ways in which climate change affects crop yields and food prices. “The whole system is changing.”

Crop yields will not suffer in every region. Some regions or countries may be able to grow more of certain crops as a result of changes in the climate, says Hynes, citing winemaking in England among other examples. Other parts of the world may be able to adapt by switching to hardier crops or more newly developed drought-resistant varieties.

Notwithstanding such adaptations, climate change is set to hinder not help the world’s food supplies, according to Paul Ekins, professor of resources and environment policy at University College London.

This leads to greater overall inflationary pressure as higher food prices feed through into higher costs of living. But the extent of this pressure varies.

The ECB researchers, for example, found that temperature increases prompted a sharp decline in productivity and rise in inflation once they exceeded a certain threshold. Depending on the crop, a temperature increase of 5C, from 20C to 25C, might have less impact on yields and inflation than one of 2C, from 34C to 36C, for example.

An employee of the citrus producing farm, Sitio Andrade, harvests tangerines on June 7, 2024 in Piedade dos Gerais, in the state of Minas Gerais, Brazil

Regions such as South America and Africa already routinely experience temperatures close to the thresholds at which they become damaging to crops, says Kuik, “so it’s in those regions that further increases in temperature have a more significant impact on food prices”.

By contrast, more temperate Europe tends to endure the worst effects of climate change — and the accompanying inflation impact — during the summer months. In 2022, food inflation in Europe rose by around 0.6 percentage points as a result of the continent’s hot summer, the ECB’s researchers found.

Food also constitutes a larger share of household expenditures in developing economies — sometimes up to 50 per cent of the consumer price index — meaning any increase in prices has a magnified effect on overall inflation, according to HSBC’s Neumann. Higher food prices also reduce the money available for other items, stifling broader consumer spending.

“The food CPI itself is also much more sensitive to disruptions and swings in input prices,” says Neumann. Wheat might make up 70 per cent of the cost of bread in a low or middle-income country but as little as 10 per cent in a richer one, where labour, energy and transport costs are more significant.

Similarly, wealthy countries that are well-integrated into global markets are better able to deal with a failed harvest. “If a German wheat harvest goes wrong, they can buy their wheat on global markets,” Neumann adds. But a poorer country may neither be able to afford to go elsewhere, nor have the infrastructure to import large quantities of the food, he adds. “The [global] south is left holding the bag.”

Advanced economies are not off the hook, however, according to Gert Peersman, professor of economics at Ghent University, Belgium. His research suggests that in the medium term up to 30 per cent of the volatility in Eurozone inflation is caused by changes in international food prices, determined by unexpected global harvest shocks.

Even though food makes up a much smaller portion of household expenditure in rich countries, most people “look at food to form their [inflation] expectations”, says Peersman. This drives actual inflation, he and many other economists argue, as it pushes people to ask for higher wages.

Barmes agrees, saying that consumers “are very sensitive to food prices . . . so if climate change means that food prices are persistently going up, that does have a disproportionate effect on their inflation expectations.”

Some economists say that in advanced economies, companies with big market power can amplify inflation in times of supply disruptions. Isabella Weber, assistant professor of economics at the University of Massachusetts Amherst, says the inflation of the past few years “was triggered by shocks to essential sectors [such as food and energy] and then propagated by firms’ pricing decisions”.

The growing impact of climate change on agriculture is reigniting a debate over whether central banks should respond to food price shocks as they do generalised price increases — by raising interest rates.

For a long time, consensus held among economists was that they should not, says Marc Pourroy, associate professor of economics at the University of Poitiers in France. This was because food inflation was seen as temporary, mean-reverting and volatile. “You don’t want your interest rates to be volatile,” he adds.

Food price inflation has also tended to be driven by external global factors, which small economies in particular have no impact over. “Interest rate hikes don’t address negative supply side shocks,” says Barmes, adding that they can actually be counterproductive because they can further cut output.

It may well be that developing countries have to take [the price of food] more into account because it’s not only a big part of the budget, it’s also a secular trend and it’s become more volatile Raghuram Rajan, former governor of the Reserve Bank of India

Nor do they increase food supply, economists and other market analysts contended when monetary policy orthodoxy was challenged in response to the food price shocks of 2008 and 2011.

This time around, though, the parameters of the debate have shifted because of climate change, economists note.

Central banks in developing economies have always had to be more responsive to food prices, says Raghuram Rajan, who was governor of the Reserve Bank of India from 2013 to 2016.

“It may well be that developing countries have to take it more into account because it’s not only a big part of the budget, it’s also a secular trend and it’s become more volatile,” he adds.

As climate change takes hold and impairs crop yields, governments are also more and more likely to turn to protectionist policies which can exacerbate the inflationary impact. Last year, for example, Indian Prime Minister Narendra Modi imposed export restrictions on broken and non-basmati white rice varieties, sending commodity prices surging.

How to respond to this is more contentious. Barmes argues there is a need for alternative inflation control tools to deal with the pressures coming from climate change.

Implemented by fiscal and industrial authorities, rather than central banks, these might include price controls and targeted subsidies. Tighter competition policy and antitrust measures are also needed to prevent corporations with large market share from profiteering during inflationary periods and thereby exacerbating the problem, he adds.

An employee checks robusta coffee beans during the cooling down process at the Tran-Q Co. coffee factory in Dong Nai province, Vietnam

Weber, the Amherst professor, argued in a recent paper that countries should build buffer stocks of food commodities to cushion against price fluctuations and levy windfall profit taxes against companies in essential sectors, such as food, to deter price gouging .

Neumann acknowledges that raising rates at a time when food prices are also rising comes with risks and is not always effective. But he adds that in most contexts “you cannot ignore food price shocks entirely, you should be raising interest rates”.

Rajan, the former RBI governor, agrees that “you have to be a little careful responding to things like the temporary shoot up in price of onions”, a short-term shock that is quickly fixed when more supply arrives.

But “you can’t just ignore [food prices]”, he adds, especially not when they are high for some time. Central banks must increase interest rates “not so much to kill this price increase, but to avoid everything else picking up with it”.

For smaller economies at least this appreciates the currency, says Pourroy, helping reduce the price of imports.

“Central banks should not overreact,” he says, but as the effects of climate change take hold, food inflation will be “too important for the economy, for the people, for them to do nothing”.

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Conclusion This document explains that there are well-understood physical mechanisms by which changes in the amounts of greenhouse gases cause climate changes. It discusses the evidence that the concentrations of these gases in the atmosphere have increased and are still increasing rapidly, that climate change is occurring, and that most of the recent change is almost certainly due to emissions of greenhouse gases caused by human activities. Further climate change is inevitable; if emissions of greenhouse gases continue unabated, future changes will substantially exceed those that have occurred so far. There remains a range of estimates of the magnitude and regional expression of future change, but increases in the extremes of climate that can adversely affect natural ecosystems and human activities and infrastructure are expected. Citizens and governments can choose among several options (or a mixture of those options) in response to this information: they can change their pattern of energy production and usage in order to limit emissions of greenhouse gases and hence the magnitude of climate changes; they can wait for changes to occur and accept the losses, damage and suffering that arise; they can adapt to actual and expected changes as much as possible; or they can seek as yet unproven âgeoengineeringâ solutions to counteract some of the climate changes that would otherwise occur. Each of these options has risks, attractions and costs, and what is actually done may be a mixture of these different options. Different nations and communities will vary in their vulnerability and their capacity to adapt. There is an important debate to be had about choices among these options, to decide what is best for each group or nation, and most importantly for the global population as a whole. The options have to be discussed at a global scale, because in many cases those communities that are most vulnerable control few of the emissions, either past or future. Our description of the science of climate change, with both its facts and its uncertainties, is offered as a basis to inform that policy debate. E v i de n c e & C a u se s B9

Climate Change: Evidence and Causes is a jointly produced publication of The US National Academy of Sciences and The Royal Society. Written by a UK-US team of leading climate scientists and reviewed by climate scientists and others, the publication is intended as a brief, readable reference document for decision makers, policy makers, educators, and other individuals seeking authoritative information on the some of the questions that continue to be asked.

Climate Change makes clear what is well-established and where understanding is still developing. It echoes and builds upon the long history of climate-related work from both national academies, as well as on the newest climate-change assessment from the United Nations' Intergovernmental Panel on Climate Change. It touches on current areas of active debate and ongoing research, such as the link between ocean heat content and the rate of warming.

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Free Climate Change Essay Examples & Topic Ideas
Good. 3 pages / 1352 words. Introduction Climate change, driven predominantly by the excessive emission of carbon dioxide from the burning of fossil fuels, is undeniably one of the most pressing global issues of the world today. This essay delves into the multifaceted nature of climate change in the 21 century,...
Climate Explained: Introductory Essays About Climate Change Topics
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Climate Change Essay for Students and Children
500+ Words Climate Change Essay. Climate change refers to the change in the environmental conditions of the earth. This happens due to many internal and external factors. The climatic change has become a global concern over the last few decades. Besides, these climatic changes affect life on the earth in various ways.
Climate Change Assay: A Spark Of Change
Bahçeşehir College is committed to increasing students' awareness of the changing world we live in. This climate change essay competition saw many students submitting well thought out pieces of writing. These essays were marked on their format, creativity, organisation, clarity, unity/development of thought, and grammar/mechanics.
PDF Climate Explained: Introductory Essays About Climate Change Topics
Climate Explained is a collection of short primers that answer diverse climate change questions, including why it's cold outside if global warming is real, how we know that humans are responsible for global warming, and the relationship between climate change and national security. Image 1. Example Climate Explained essays on the Yale Climate ...
Our Future Is Now
She wrote this essay on climate change for WR 355/Travel Writing, which she took while studying abroad in Newcastle in spring 2020. Francesca Minicozzi (class of 2021) is a Writing/Biology major who plans to study medicine after graduation. She wrote this essay on climate change for WR 355/Travel Writing, which she took while studying abroad in ...
Climate Change Essay
200 Words Essay on Climate Change. The climate of the Earth has changed significantly over time. While some of these changes were brought on by natural events like volcanic eruptions, floods, forest fires, etc., many of the changes were brought on by human activity. The burning of fossil fuels, domesticating livestock, and other human ...
Climate Change Essay for Students in English
500+ Words Essay on Climate Change. Climate change is a major global challenge today, and the world is becoming more vulnerable to this change. Climate change refers to the changes in Earth's climate condition. It describes the changes in the atmosphere which have taken place over a period ranging from decades to millions of years.
Responding to the Climate Threat: Essays on Humanity's Greatest
The scientific, economic, and policy aspects of climate change are already a challenge to communicate, without factoring in the distractions and deflections from organized programs of misinformation and denial. Here, four scholars, each with decades of research on the climate threat, take on the task of explaining our current understanding of ...
Essay on Climate Change: Check Samples in 100, 250 Words
Essay On Climate Change in 100 Words. Climate change refers to long-term alterations in Earth's climate patterns, primarily driven by human activities, such as burning fossil fuels and deforestation, which release greenhouse gases into the atmosphere. These gases trap heat, leading to global warming. The consequences of climate change are ...
What Is Climate Change?
Climate change is a long-term change in the average weather patterns that have come to define Earth's local, regional and global climates. These changes have a broad range of observed effects that are synonymous with the term. Changes observed in Earth's climate since the mid-20th century are driven by human activities, particularly fossil fuel burning, […]
Global warming
Global warming, the phenomenon of rising average air temperatures near Earth's surface over the past 100 to 200 years. Although Earth's climate has been evolving since the dawn of geologic time, human activities since the Industrial Revolution have a growing influence over the pace and extent of climate change.
Climate Change Essay
Climate Change Essay. This essay sample was donated by a student to help the academic community. Papers provided by EduBirdie writers usually outdo students' samples. Climate change is a global phenomenon that affects us all. It can be challenging to wrap your head around such a complex issue, but understanding climate change is an essential ...
TED: Ideas change everything
The greenhouse effect has been detected, and it is changing our climate now. James Hansen, June 24, 1988. The drought that crippled much of the U.S. and Canada in 1988-89 was the costliest natural disaster in U.S. history prior to Hurricane Katrina. It spawned dust storms in the Midwest and forest fires in Yellowstone National Park.
Climate Change
Climate change is the long-term alteration of temperature and typical weather patterns in a place. Climate change could refer to a particular location or the planet as a whole. Climate change may cause weather patterns to be less predictable. These unexpected weather patterns can make it difficult to maintain and grow crops in regions that rely ...
Climate Changes, So Should We...
In 2015, the Paris Agreement, which is legally binding on climate change, has been accepted by approximately 191 countries to limit global warming to below 2, if possible, to 1.5. The countries have committed to achieve this primary goal and minimise global warming. To accomplish this goal requires all parties to put forward their best efforts ...
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Fossil fuels - coal, oil and gas - are by far the largest contributor to global climate change, accounting for over 75 per cent of global greenhouse gas emissions and nearly 90 per cent ...
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Courtney Lindwall. Climate change is our planet's greatest existential threat. If we don't limit greenhouse gas emissions from the burning of fossil fuels, the consequences of rising global ...
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PAGES 4 WORDS 1247. Climate change, divorced from the political rhetoric, is a concrete phenomenon affecting multiple systems. The economic and social ramifications of climate change are ancillary to its measurable physical effects. However, the measurable physical effects vary depending on geographic factors.
The Intricacies of Temperature in Tropical Rainforests: a Closer Look
Essay Example: Some of the most beautiful places on Earth are tropical jungles. These environments are full of life and variety and a lot of that is thanks to the climate they live in especially the temperature changes. ... But climate change is a big danger to this security which could have very bad effects on the health and variety of the ...
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C ONCLUSION. This document explains that there are well-understood physical mechanisms by which changes in the amounts of greenhouse gases cause climate changes. It discusses the evidence that the concentrations of these gases in the atmosphere have increased and are still increasing rapidly, that climate change is occurring, and that most of ...
On Earth Day 2024, India should seriously consider fortifying its
Climate change's impacts extend beyond the physical realm to affect mental health, an aspect often overlooked. A scientific assessment by the US Global Change Research Program (GCRP) in 2016 suggested events such as floods, droughts, and cyclones can trigger anxiety, depression, and post-traumatic stress disorder. Exposure to extreme heat can exacerbate aggressive behaviour, substance use ...
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Simply sign up to the Climate change myFT Digest -- delivered directly to your inbox. Sixty years ago, when Giuseppe Divita's grandparents opened their olive mill in Chiaramonte Gulfi, Sicily ...
Conclusion
Climate Change: Evidence and Causes is a jointly produced publication of The US National Academy of Sciences and The Royal Society. Written by a UK-US team of leading climate scientists and reviewed by climate scientists and others, the publication is intended as a brief, readable reference document for decision makers, policy makers, educators, and other individuals seeking authoritative ...
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I've passed the most extensive, it was the most extensive climate change legislation in history, in history. We find ourselves - and by the way, black colleges, I came up with $50 billion for ...

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