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How to Write an Essay About Global Warming

Last Updated: May 13, 2021

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If you've been assigned an essay about global warming, you'll be needing to focus on the burning issues this topic raises, as well as demonstrating various writing techniques. In the context of academic writing, your global warming essay may be written in three main composition genres: argumentative, problem solving and expository. This article will show you how to combine these essay types within one, allowing you to cover the topic at length.

Before you start writing…

Step 1 Narrow down the topic, making it sound more precise.

  • The greenhouse effect and global warming
  • Global warming: real challenge or far-fetched issue?
  • Global warming: mechanism of action
  • Is it possible to reverse global warming?
  • What caused global warming?
  • And so forth.

Step 2 Study the topic.

  • Stick to a certain number of reliable sources. Don’t confuse the essay with a research paper, where you would need to cite dozens of references. Writing a composition, limit yourself to five if possible, or a maximum of 10 sources.
  • Narrow down the allowable sources. Many teachers view some websites with some skepticism and wouldn’t want you to cite them. Instead, you may be recommended to use printed sources. Ask if your teacher hasn't already made this clear.
  • Choose reliable sources, scientific journals or government supported websites. For example: climate.nasa.gov, nrmsc.usgs.gov, epa.gov, etc.
  • Write down facts, figures, statistics or other accurate data that will serve as strong arguments to support your statement.
  • Consider the evidences that are at odds with the view you adhere to. For example, if you are aimed at expanding on the global warming problem, you can’t ignore information saying that our planet faces an opposed process – global cooling. Further, these arguments will come into play and help you reach the appropriate conclusion.
  • Don’t forget to note the information needed for designing the bibliography. Doing so, bear in mind the required reference format (MLA, APA, Turabian, Chicago, etc.) assigned to you by your teacher.

Step 3 Unscramble your ideas.

  • Write a mind map. Suppose you need to cover the topic “Effects of Global Warming”. Put the theme in the center and briefly list the most burning consequences.
  • Proceeding from the scientific data you have collected, come up with your original ideas. For instance, if you dwell on the impact of global warming on ice caps, you may suggest a scenario provided that the ablation isn’t stopped.

Step 4 Craft your thesis statement.

  • If you can incorporate all ideas within one extended sentence, you will get a powerful statement. For example: Global warming is just a fanciful problem invented to suppress substantial challenges that constitute a real threat for humanity.
  • Irrespective of the way you formulate the topic, global warming is a pressing issue, and it shouldn’t leave the reader feeling indifferent. Thus, your thesis statement should provoke feedback and come across as challenging. For instance: Lifestyle change is the most considerable contribution to global warming problem treatment.

Implement your ideas in the text

Step 1 Write a head-turning introduction.

  • This may be a quote, such as: “We have passed the tipping points, but, we have not passed a point of no return. We can still roll things back in time, but it is going to require a quick turn in direction”, Dr. James Hansen - top climatologist of NASA. You may get a glimpse of the future and come up with a scene that depicts the potential dire consequences of global warming.
  • Use the techniques applied in an expository essay to explain what global warming is about. Utilize figures and statistics that could not be bettered to speak about the seriousness of the problem.
  • Be specific and don’t waffle, since the core of the matter you are to develop in the body of the essay.
  • Write a thesis statement, which is the embodiment of the problem.

Step 2 Cut to the chase and write the body.

  • Provide an explanation of the evidence you describe in the body of the text. If you are writing about factors that contribute to global warming, give specific scientific support. For example: Carbon dioxide emissions, coming from electricity production, top the list of causes for global warming. Just imagine, emissions have increased by 16 times since 1990 and have now reached a dangerous level.
  • As far as global warming problem is the issue that touches all and sundry, you might have felt its impact in everyday life. Share your experience with the reader. It will definitely strengthen your arguments: Look out of the window! It is mid-January, but instead of snow banks, there is mud and drizzling rain. Isn’t it a vivid demonstration of global warming?
  • Suggest solutions to the problem. People like happy endings, where the good always wins. Similarly, there are sure to be methods to reverse global warming. And they do exist. Provide the ways to handle the problem that, in the first place, are within power of every person. After all, to change the world, one should start with himself/herself.

Step 3 Conclude the essay.

  • Go back to the thesis statement. It is known that repetition has a powerful effect, though, you shouldn’t reword thesis statement. Instead, paraphrase it, keeping its primary meaning intact. For instance, instead of saying "Lifestyle change is the most considerable contribution to global warming problem treatment", write "Having changed our social behavior and consumer attitude to nature, we can reverse global warming problem".

Step 4 Good luck with your global warming essay writing!

Summarizing the approach

Step 1 Pin down the topic.

  • The Greenhouse effect as the main consequence of global warming
  • Global warming: real challenge or far-fetched issue
  • What caused global warming

Step 2 Optimize topic exploration.

  • Limit number of sources
  • Choose valid information
  • Find and note accurate data connected with global warming issue
  • Consider various approaches to global warming problem
  • Adhere to particular reference format

Step 3 Arrange ideas.

  • Make a list of global warming consequences, causes and solutions
  • Generate own ideas, based on research findings

Step 4 Make a thesis statement.

  • Use one sentence to craft powerful thesis statement on global warming issue
  • Make it challenging to provoke reader’s feedback

Step 5 Write strong introductory part.

  • Be specific and concise
  • Utilize figures and statistics to demonstrate the seriousness of global warming problem
  • Write thesis statement with the problem exposition in it

Step 6 Write the body of the text.

  • Provide evidences of global warming and expand on them
  • Suggest global warming examples from personal experience
  • Suggest ways to handle the problem, with a special focus on the role of every person in prevention global warming

Step 7 Write conclusion.

  • Restate thesis statement for it to have a greater impact on readers
  • Summarize main ideas in the last paragraph including call to action speech.

Community Q&A

Donagan

  • Outline all of the main ideas used in the body of the essay within one paragraph. Thanks Helpful 0 Not Helpful 0
  • Make your last paragraph like a call to action: "We all have the grip of the situation! Let us be eco-friendly, not lazy–– walk a hundred meters to the store instead of taking your car, utilize alternative energy sources and buy energy-efficient appliances. Let's be conscientious and responsible for our deeds." Thanks Helpful 0 Not Helpful 0

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Grinnell Glacier shrinkage

How does global warming work?

Where does global warming occur in the atmosphere, why is global warming a social problem, where does global warming affect polar bears.

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  • U.S. Department of Transportation - Global Warming: A Science Overview
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Grinnell Glacier shrinkage

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.

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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.

start an essay on global warming

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 .

Essay on Global Warming – Causes and Solutions

500+ words essay on global warming.

Global Warming is a term almost everyone is familiar with. But, its meaning is still not clear to most of us. So, Global warming refers to the gradual rise in the overall temperature of the atmosphere of the Earth. There are various activities taking place which have been increasing the temperature gradually. Global warming is melting our ice glaciers rapidly. This is extremely harmful to the earth as well as humans. It is quite challenging to control global warming; however, it is not unmanageable. The first step in solving any problem is identifying the cause of the problem. Therefore, we need to first understand the causes of global warming that will help us proceed further in solving it. In this essay on Global Warming, we will see the causes and solutions of Global Warming.

essay on global warming

Causes of Global Warming

Global warming has become a grave problem which needs undivided attention. It is not happening because of a single cause but several causes. These causes are both natural as well as manmade. The natural causes include the release of greenhouses gases which are not able to escape from earth, causing the temperature to increase.

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Further, volcanic eruptions are also responsible for global warming. That is to say, these eruptions release tons of carbon dioxide which contributes to global warming. Similarly, methane is also one big issue responsible for global warming.

start an essay on global warming

So, when one of the biggest sources of absorption of carbon dioxide will only disappear, there will be nothing left to regulate the gas. Thus, it will result in global warming. Steps must be taken immediately to stop global warming and make the earth better again.

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Global Warming Solutions

As stated earlier, it might be challenging but it is not entirely impossible. Global warming can be stopped when combined efforts are put in. For that, individuals and governments, both have to take steps towards achieving it. We must begin with the reduction of greenhouse gas.

Furthermore, they need to monitor the consumption of gasoline. Switch to a hybrid car and reduce the release of carbon dioxide. Moreover, citizens can choose public transport or carpool together. Subsequently, recycling must also be encouraged.

Read Global Warming Speech here

For instance, when you go shopping, carry your own cloth bag. Another step you can take is to limit the use of electricity which will prevent the release of carbon dioxide. On the government’s part, they must regulate industrial waste and ban them from emitting harmful gases in the air. Deforestation must be stopped immediately and planting of trees must be encouraged.

In short, all of us must realize the fact that our earth is not well. It needs to treatment and we can help it heal. The present generation must take up the responsibility of stopping global warming in order to prevent the suffering of future generations. Therefore, every little step, no matter how small carries a lot of weight and is quite significant in stopping global warming.

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FAQs on Global Warming

Q.1 List the causes of Global Warming.

A.1 There are various causes of global warming both natural and manmade. The natural one includes a greenhouse gas, volcanic eruption, methane gas and more. Next up, manmade causes are deforestation, mining, cattle rearing, fossil fuel burning and more.

Q.2 How can one stop Global Warming?

A.2 Global warming can be stopped by a joint effort by the individuals and the government. Deforestation must be banned and trees should be planted more. The use of automobiles must be limited and recycling must be encouraged.

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Essay On Global Warming

Essay on global warming is an important topic for students to understand. The essay brings to light the plight of the environment and the repercussion of anthropogenic activities. Continue reading to discover tips and tricks for writing an engaging and interesting essay on global warming.

Essay On Global Warming in 300 Words

Global warming is a phenomenon where the earth’s average temperature rises due to increased amounts of greenhouse gases. Greenhouse gases such as carbon dioxide, methane and ozone trap the incoming radiation from the sun. This effect creates a natural “blanket”, which prevents the heat from escaping back into the atmosphere. This effect is called the greenhouse effect.

Contrary to popular belief, greenhouse gases are not inherently bad. In fact, the greenhouse effect is quite important for life on earth. Without this effect, the sun’s radiation would be reflected back into the atmosphere, freezing the surface and making life impossible. However, when greenhouse gases in excess amounts get trapped, serious repercussions begin to appear. The polar ice caps begin to melt, leading to a rise in sea levels. Furthermore, the greenhouse effect is accelerated when polar ice caps and sea ice melts. This is due to the fact the ice reflects 50% to 70% of the sun’s rays back into space, but without ice, the solar radiation gets absorbed. Seawater reflects only 6% of the sun’s radiation back into space. What’s more frightening is the fact that the poles contain large amounts of carbon dioxide trapped within the ice. If this ice melts, it will significantly contribute to global warming. 

A related scenario when this phenomenon goes out of control is the runaway-greenhouse effect. This scenario is essentially similar to an apocalypse, but it is all too real. Though this has never happened in the earth’s entire history, it is speculated to have occurred on Venus. Millions of years ago, Venus was thought to have an atmosphere similar to that of the earth. But due to the runaway greenhouse effect, surface temperatures around the planet began rising. 

If this occurs on the earth, the runaway greenhouse effect will lead to many unpleasant scenarios – temperatures will rise hot enough for oceans to evaporate. Once the oceans evaporate, the rocks will start to sublimate under heat. In order to prevent such a scenario, proper measures have to be taken to stop climate change.

More to Read: Learn How Greenhouse Effect works

Tips To Writing the Perfect Essay

Consider adopting the following strategies when writing an essay. These are proven methods of securing more marks in an exam or assignment.

  • Begin the essay with an introductory paragraph detailing the history or origin of the given topic.
  • Try to reduce the use of jargons. Use sparingly if the topic requires it.
  • Ensure that the content is presented in bulleted points wherever appropriate.
  • Insert and highlight factual data, such as dates, names and places.
  • Remember to break up the content into smaller paragraphs. 100-120 words per paragraph should suffice.
  • Always conclude the essay with a closing paragraph.

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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

Inside an Antarctic time machine

Relevant talks.

New thinking on the climate crisis

New thinking on the climate crisis

Global ethic vs. national interest

Gordon Brown

Global ethic vs. national interest.

Time-lapse proof of extreme ice loss

James Balog

Time-lapse proof of extreme ice loss.

Why I must speak out about climate change

James Hansen

Why i must speak out about climate change.

Let the environment guide our development

Johan Rockström

Let the environment guide our development.

Addicted to risk

Naomi Klein

Addicted to risk.

Let's prepare for our new climate

Vicki Arroyo

Let's prepare for our new climate.

ENCYCLOPEDIC ENTRY

Global warming.

The causes, effects, and complexities of global warming are important to understand so that we can fight for the health of our planet.

Earth Science, Climatology

Tennessee Power Plant

Ash spews from a coal-fueled power plant in New Johnsonville, Tennessee, United States.

Photograph by Emory Kristof/ National Geographic

Ash spews from a coal-fueled power plant in New Johnsonville, Tennessee, United States.

Global warming is the long-term warming of the planet’s overall temperature. Though this warming trend has been going on for a long time, its pace has significantly increased in the last hundred years due to the burning of fossil fuels . As the human population has increased, so has the volume of fossil fuels burned. Fossil fuels include coal, oil, and natural gas, and burning them causes what is known as the “greenhouse effect” in Earth’s atmosphere.

The greenhouse effect is when the sun’s rays penetrate the atmosphere, but when that heat is reflected off the surface cannot escape back into space. Gases produced by the burning of fossil fuels prevent the heat from leaving the atmosphere. These greenhouse gasses are carbon dioxide , chlorofluorocarbons, water vapor , methane , and nitrous oxide . The excess heat in the atmosphere has caused the average global temperature to rise overtime, otherwise known as global warming.

Global warming has presented another issue called climate change. Sometimes these phrases are used interchangeably, however, they are different. Climate change refers to changes in weather patterns and growing seasons around the world. It also refers to sea level rise caused by the expansion of warmer seas and melting ice sheets and glaciers . Global warming causes climate change, which poses a serious threat to life on Earth in the forms of widespread flooding and extreme weather. Scientists continue to study global warming and its impact on Earth.

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Home / For Educators: Grades 6-12 / Climate Explained: Introductory Essays About Climate Change Topics

Climate Explained: Introductory Essays About Climate Change Topics

Filed under: backgrounders for educators ,.

Climate Explained, a part of Yale Climate Connections, is an essay collection that addresses an array of climate change questions and topics, 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.

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Climate Change Basics: Five Facts, Ten Words

Backgrounders for Educators

To simplify the scientific complexity of climate change, we focus on communicating five key facts about climate change that everyone should know. 

start an essay on global warming

Why should we care about climate change?

Having different perspectives about global warming is natural, but the most important thing that anyone should know about climate change is why it matters.  

start an essay on global warming

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Steps To Follow While Writing An Essay On Climate Change

Jessica Nita

Table of Contents

start an essay on global warming

Climate change is the most essential issue of our generation; we are the first to witness its early signs and the last who have a chance of stopping them from happening.

Living in a bubble of denial can only get us this far; the planet which is our home is already a scene for melting glaciers, raising floods, extinction of species… the list goes on and on. Spreading awareness on matters of climate change through any means available, including as seemingly trivial form as writing a school essay, cannot be underestimated.

Follow the guidelines suggested in the paragraphs below to learn how to create a perfect essay that will get you an appraisal of your teacher.

Essay on climate changes: how to write?

If you really want to make your teacher gasp while they are reading your work, there are three vital things to pay attention to .

First of all, read the topic carefully and understand it’s specific, i.e., what is expected from you.

For instance, if it is the role of individuals in helping prevent climate change, you should not focus so much on the global problems, but speak about how small changes all of us can introduce in our routines will eventually have a positive environmental effect.

Secondly, determine your personal take on the problem . Search for materials on your subject using keywords, and pile up the evidence that supports your point of view.

Finally, write a conclusion. Make sure that the conclusion you make reflects the viewpoints you have been expressing all throughout your essay.

Below you will find a more detailed breakdown of tasks you will have to accomplish to complete writing an essay on climate changes that is worthy of a top mark.

Check if it is an argumentative essay on climate change or more of a speculative one? Arrange your writing accordingly.

  • Craft the outline and don’t go off-topic.
  • Search for keywords .
  • Make a plan .
  • Avoid the most common mistakes from the start.
  • Write an introduction thinking about what you will write later.
  • Develop your ideas according to the outline .
  • Make a conclusion which is consistent with what you’ve written in the main paragraphs.
  • Proofread the draft , correct mistakes and print out the hard copy. All set!

One of the most focal of your writing will be factual evidence. When writing on climate change, resort to providing data shared by international organizations like IPCC , WWF , or World Bank .

It is undeniable that among the main causes of climate change, unfortunately, there are oil and fossil fuels that are the basis of the whole economy and still invaluable sources of energy.

Although everyone knows that oil resources are polluting and that it would be much more useful and environmentally sustainable to rely on renewable energies such as wind and solar energies and electricity, the power of the world seem not to notice or pretend not to see for don’t go against your own interests.

The time has come to react and raise awareness of the use of renewable energy sources.

In addition to the causes already mentioned, we must consider the increase in the carbon dioxide air that traps heat in our atmosphere, thus increasing the temperatures with the consequent of the Arctic glaciers melting.

WWF reported that in 2016, the recorded data was quite worrying with a constant increase in temperatures and a 40% decrease in Arctic marine glaciers.

Topics for essay on global warming and climate change

If you do not have any specific topic to write on, consider yourself lucky. You can pick one that you are passionate about – and in fact, this is what you should do! If we think back to the very definition of essay, it is nothing more than a few paragraphs of expressing one’s personal attitude and viewpoints on a certain subject. Surely, you need to pick a subject that you are opinionated about to deliver a readable piece of writing!

Another point to consider is quaintness and topicality factors. You don’t want to end up writing on a subject that the rest of your class will, and in all honesty, that has zero novelty to it.

Even if it is something as trivial as the greenhouse effect, add an unexpected perspective to it: the greenhouse effect from the standpoint of the feline population of Montenegro. Sounds lunatic, but you get the drift.

Do not worry, below you will find the list of legitimately coverable topics to choose from:

  • The last generation able to fight the global crisis.
  • Climate change: top 10 unexpected causes.
  • Climate changes. Things anyone can do.
  • Climate changes concern everyone. Is it true?
  • The Mauna Loa volcano: climate change is here.
  • Water pollution and coastal cities: what needs to be done?
  • Is there global warming if it’s still cold?
  • The CO2 concentration in the atmosphere.
  • Celebrity activists and climate changes.
  • Individual responsibility for the environment.
  • How the loss of biodiversity is the biggest loss for humanity.
  • Ways to fight global warming at home.
  • Sustainable living as a way of fighting climate change.
  • Climate change fighting countries to look up to.
  • Industrial responsibility and climate change.
  • What future will be like if we fail to make an environmental stand?
  • Discovering water on Mars: a new planet to live on?
  • Climate change effects on poor countries.
  • Nuclear power laws and climate change.
  • Is it true that climate change is caused by man?

Mistakes to avoid when writing an essay on climate change

When composing your essay, you must avoid the following (quite common!) mistakes:

  • Clichés – no one wants to read universal truths presented as relevant discoveries.
  • Repeating an idea already expressed – don’t waste your readers’ time .
  • Making an accumulation of ideas that are not connected and that do not follow one another; structure your ideas logically .
  • Being contradictive (check consistency).
  • Using bad or tired collocations .
  • Using lackluster adjectives like “good”/”bad”. Instead, think of more eye-catching synonyms.

Structure your essay in a logical way : introduce your thesis, develop your ideas in at least 2 parts that contain several paragraphs, and draw a conclusion.

Bottom line

Writing an essay on global warming and climate change is essentially reflecting on the inevitable consequence of the irresponsible behavior of people inhabiting the planet. Outside of big-scale thinking, there is something each of us can do, and by shaping minds the right way, essential change can be done daily.

Each of us can act to protect the environment, reducing the use of plastic, recycling, buying food with as little packaging as possible, or turning off water and light when not in use. Every little help, even a short essay on climate change can help make a difference.

Can’t wait to save the planet? Do it, while we write your essay. Easy order, complete confidentiality, timely delivery. Click the button to learn more!

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Popular request:

Writing the best global warming essay – take an original approach.

October 8, 2019

Global warming is one of the most disastrous phenomenons in the history of the earth. Unlike several decades ago, the scientific evidence of global warming and associated impacts has become clearer. But even with the dangers such as the thawing of polar ice sheets and extensive droughts become the norm, it is sad that we have failed to come up with a cohesive strategy to counter it. Now, when you are required to write a global warming essay or related paper; how do you do it?

global-warming-essay

Craft The Right Structure For Your Essay On Global Warming

Even before starting to work on your global warming essay, it is prudent to create a good structure. The goal of the structure is ensuring you know what will come at what section and creating a smooth flow of ideas from the start to the end. Here is a sample structure of a great short essay on global warming for students.

Title : The title should be catchy and relevant to the topic.

Introduction : As the first part of your essay, you should use the introduction to prepare the reader about what is in the body. Also, make the introduction interesting so that the reader can have the interest to keep reading.

The body : This is another very important part of the essay where you get into the details of your subject. Every paragraph on global warming essays should explain a different point.

Conclusion : After bringing out your argument cohesively, the conclusion allows you to tie the points neatly. You should summarize the entire essay in a few sentences. Note that the conclusion should not introduce new points. However, you can call for further studies on the topic if you found it inadequately covered.

Research All Facts Before Writing Your Essay On Global Warming

Now that you have the best structure for the essay of global warming, it is time to get down into the details of your topic. Every global warming essay in English for students should be deeply researched to cover the following components:

Some history of global warming (when did it start). At what point was it discovered to be a threat to the planet?

What are the causes of global warming? Make sure to cite specifics such as individual sources of emissions.

Effects of global warming. Because these are many, it is important to focus on those that you have ample information on.

Carefully bring out the different interventions that have been instituted and point out their success or failure.

Special Tips For A Winning Global Warming Essay For Students

In addition to having the best structure, and comprehensive research on global warming, here are other useful tips to help you craft a good essay.

  • Use images to demonstrate various aspects of the global warming phenomenon.
  • Use the latest trends to make your essay more impressive.
  • Consider using short sentences and paragraphs to make the essay easy to read and understand.
  • Make sure to use the right citations. For example, capture the latest statistics and give the right references. This will make your work more authentic.
  • Make the essay easy to read by using simple English and explaining every complex phrase. If there are initials, ensure to give their full meaning the first time they appear in the essay.
  • Use samples of other global warming essays for students to learn how to craft winning papers.
  • If your writing skills are poor or the deadline is tight, do not hesitate to seek writing help with your college essay. This will guarantee you top marks as you hone the necessary skills.

Essay Of Global Warming: Where Do You Place Environmental Activism

Another concept that features prominently in global warming essays is environmental activism. You can either include it as a separate paragraph in a short essay or a different subtopic for longer papers. One of the most outstanding activists in fighting global warming out there is Greta Thunberg. Here is some info about her:

Greta Thunberg is a Swedish environmental activist whose campaign on climate change has won her international recognition. At age 15, she started spending part of her school time outside the Swedish parliament with banners calling for stronger efforts to counter global warming. She called it “School Strike for Climate.” Soon, other students joined and held demonstrations from across the world, calling for firmer action on climate change. In 2018, she addressed the UN Climate Change Conference.

Identifying Essay Topics On Global Warming

If you are in a global warming class or a related subject, there are instances when your tutor might require you to pick your preferred topic to write on. In such a case, you should look for a subject that has ample information to write on. Though it is also okay to be exploratory by picking subjects that are relatively new, you are likely to get stuck along the way for a lack of information. Here are some great topics that you should consider for your global warming essay.

  • The New Dynamics of Climate Change: What are the Factors making it Hard to Address the Global Phenomenon.
  • How does Global Warming Impact Food Production?
  • Climate Change: Why the Earth is Still at Risk even if Carbon Dioxide Emissions are Reduced.
  • Demonstrating the Link between Greenhouse Effect and Global Warming.
  • What Efforts Could Have been used to Prevent Global Warming 50 Years Ago?
  • Demystifying Global Warming Denial and its Impact on Mitigation Effects?
  • Red Alert: Why Global Warming could become Unstoppable even with the new interventions.
  • Exploring the Shift in Earth Balance of the Polar Ice: A Closer Look at Antarctic Ice Sheet.
  • Is there a Link between Climate Change and Sea-level Changes in Islands?
  • Learning From the Past: Exploring the Lessons Drawn from the Kyoto Protocol on Carbon Dioxide.
  • Evaluating the Relationship between Global Warming and Population Changes of Tropic Animals.
  • Can the Fight against Global Warming be won?
  • The Extended Impacts of Air Pollution: A Closer Look at the Health of Forests
  • Taking Stock of Kyoto: Why Our Best is not enough to Halt Global Warming.
  • Global Biodiversity Change: Exploring the Good, the Bad, and the Ugly of Climate Change.
  • Assessing the Extinction of Debt of Mountain Plants under the Effect of Climate Change.
  • Evaluating the Species that are Most Vulnerable from Global Warming.
  • Assessing Greenhouse Gases Emissions Production in West China.
  • What are the Most Effective Ways of Reducing Carbon Dioxide Emissions in the Transport Sector: A Closer Look at Copenhagen.
  • Polar Volcanoes: Evaluating the Impact of their Degradation Because of Global Warming.
  • Global Warming and its Impact on Migration Paths.
  • Impacts of Pesticides on Water Safety: Exploring its Link to Air and Water Pollution.
  • International Treaties: Evaluating their Efficiency in Addressing Global Warming.
  • Demonstrating how Politics Can Affect Global Warming.
  • A Closer Look at the Link between Global Warming and Development of the Chemical Industry.
  • Assessing the Carbon Footprint of Global Tourism: A Closer Look at Sweden
  • Demystifying The Main Processes used by Greenhouse Gases to Take Heat and Radiate it back.
  • Evaluating the Efficiency of Strategies used to Reduce Greenhouse Gas Concentration in the Atmosphere.
  • Assessing the Impacts of Climate Extremes: A Case Study of Egypt 1990-2019.
  • What are the Impacts of Climate Change on Coral Reefs? A Closer Look at the Great Barrier Reef.
  • Exploring the Impacts of Global Warming on Business in London.
  • Distributed Burden of Climate Change: Influence of Ethics, Science, and Development.
  • Evaluating the Impacts of Climate Change on Tourism: A Case Study of France.
  • Impact of Climate Change on Portable Water: A Case Study of India.
  • Differentiating between Anthropogenic and Natural Climatic Changes.
  • A Theoretical View: Why are Some Countries Ignoring the Global Warming phenomena?
  • Disappearing Forests: Exploring the Best Strategies for Saving them.
  • Economic Development vs Environment: The Politics of Air Pollution, Health and Wealth.
  • Is this the Best Solution to Global Warming: A Closer Look at the Hybrid Approach to Addressing the Problem of Deforestation.
  • Evaluating the Impact of Food Waste on Climate Change.
  • Global Warming in Numbers: Demystifying the Earth Surface Heating Rates in the Last 100 years.
  • Using Technology to Fix the Problem of Global Warming
  • Linking Security issues and Global Warming.
  • Why are the impacts of Global Warming Felt more in Some Countries than Others?
  • Estimating greenhouse gas Emissions from India’s Domestic Water Sector.
  • Challenges of Addressing Greenhouse Gas Emissions from Municipal Solid Waste Management Facilities in India.
  • Assessing the Place of Environmental Activism in Countering the Problem of Global Warming.
  • Is Global Warming a Natural Cycle?
  • On the Trails of Global Warming: Does the World have a Future?
  • Global Warming: Are Human Beings the Biggest Enemies to the Planet?

The Final Take On Writing Global Warming Essays

If you are new to college, tasks such as global warming essay assignments will be very common. This post has demonstrated how to plan for such essays and get the highest marks. Do not let college essays cause stress to you; use the tips provided in this post to write like a pro.

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A cityscape view with reflections of people on windows and a dramatic cloudy sky in the background.

A problem built into our relationship with energy itself. Photo by Ferdinando Scianna/Magnum

Deep warming

Even if we ‘solve’ global warming, we face an older, slower problem. waste heat could radically alter earth’s future.

by Mark Buchanan   + BIO

The world will be transformed. By 2050, we will be driving electric cars and flying in aircraft running on synthetic fuels produced through solar and wind energy. New energy-efficient technologies, most likely harnessing artificial intelligence, will dominate nearly all human activities from farming to heavy industry. The fossil fuel industry will be in the final stages of a terminal decline. Nuclear fusion and other new energy sources may have become widespread. Perhaps our planet will even be orbited by massive solar arrays capturing cosmic energy from sunlight and generating seemingly endless energy for all our needs.

That is one possible future for humanity. It’s an optimistic view of how radical changes to energy production might help us slow or avoid the worst outcomes of global warming. In a report from 1965, scientists from the US government warned that our ongoing use of fossil fuels would cause global warming with potentially disastrous consequences for Earth’s climate. The report, one of the first government-produced documents to predict a major crisis caused by humanity’s large-scale activities, noted that the likely consequences would include higher global temperatures, the melting of the ice caps and rising sea levels. ‘Through his worldwide industrial civilisation,’ the report concluded, ‘Man is unwittingly conducting a vast geophysical experiment’ – an experiment with a highly uncertain outcome, but clear and important risks for life on Earth.

Since then, we’ve dithered and doubted and argued about what to do, but still have not managed to take serious action to reduce greenhouse gas emissions, which continue to rise. Governments around the planet have promised to phase out emissions in the coming decades and transition to ‘green energy’. But global temperatures may be rising faster than we expected: some climate scientists worry that rapid rises could create new problems and positive feedback loops that may accelerate climate destabilisation and make parts of the world uninhabitable long before a hoped-for transition is possible.

Despite this bleak vision of the future, there are reasons for optimists to hope due to progress on cleaner sources of renewable energy, especially solar power. Around 2010, solar energy generation accounted for less than 1 per cent of the electricity generated by humanity. But experts believe that, by 2027, due to falling costs, better technology and exponential growth in new installations, solar power will become the largest global energy source for producing electricity. If progress on renewables continues, we might find a way to resolve the warming problem linked to greenhouse gas emissions. By 2050, large-scale societal and ecological changes might have helped us avoid the worst consequences of our extensive use of fossil fuels.

It’s a momentous challenge. And it won’t be easy. But this story of transformation only hints at the true depth of the future problems humanity will confront in managing our energy use and its influence over our climate.

As scientists are gradually learning, even if we solve the immediate warming problem linked to the greenhouse effect, there’s another warming problem steadily growing beneath it. Let’s call it the ‘deep warming’ problem. This deeper problem also raises Earth’s surface temperature but, unlike global warming, it has nothing to do with greenhouse gases and our use of fossil fuels. It stems directly from our use of energy in all forms and our tendency to use more energy over time – a problem created by the inevitable waste heat that is generated whenever we use energy to do something. Yes, the world may well be transformed by 2050. Carbon dioxide levels may stabilise or fall thanks to advanced AI-assisted technologies that run on energy harvested from the sun and wind. And the fossil fuel industry may be taking its last breaths. But we will still face a deeper problem. That’s because ‘deep warming’ is not created by the release of greenhouse gases into the atmosphere. It’s a problem built into our relationship with energy itself.

F inding new ways to harness more energy has been a constant theme of human development. The evolution of humanity – from early modes of hunter-gathering to farming and industry – has involved large systematic increases in our per-capita energy use. The British historian and archaeologist Ian Morris estimates, in his book Foragers, Farmers, and Fossil Fuels: How Human Values Evolve (2015), that early human hunter-gatherers, living more than 10,000 years ago, ‘captured’ around 5,000 kcal per person per day by consuming food, burning fuel, making clothing, building shelter, or through other activities. Later, after we turned to farming and enlisted the energies of domesticated animals, we were able to harness as much as 30,000 kcal per day. In the late 17th century , the exploitation of coal and steam power marked another leap: by 1970, the use of fossil fuels allowed humans to consume some 230,000 kcal per person per day. (When we think about humanity writ large as ‘humans’, it’s important to acknowledge that the average person in the wealthiest nations consumes up to 100 times more energy than the average person in the poorest nations.) As the global population has risen and people have invented new energy-dependent technologies, our global energy use has continued to climb.

In many respects, this is great. We can now do more with less effort and achieve things that were unimaginable to the 17th-century inventors of steam engines, let alone to our hominin ancestors. We’ve made powerful mining machines, superfast trains, lasers for use in telecommunications and brain-imaging equipment. But these creations, while helping us, are also subtly heating the planet.

All the energy we humans use – to heat our homes, run our factories, propel our automobiles and aircraft, or to run our electronics – eventually ends up as heat in the environment. In the shorter term, most of the energy we use flows directly into the environment. It gets there through hot exhaust gases, friction between tires and roads, the noises generated by powerful engines, which spread out, dissipate, and eventually end up as heat. However, a small portion of the energy we use gets stored in physical changes, such as in new steel, plastic or concrete. It’s stored in our cities and technologies. In the longer term, as these materials break down, the energy stored inside also finds its way into the environment as heat. This is a direct consequence of the well-tested principles of thermodynamics.

Waste heat will pose a problem that is every bit as serious as global warming from greenhouse gases

In the early decades of the 21st century , this heat created by simply using energy, known as ‘waste heat’, is not so serious. It’s equivalent to roughly 2 per cent of the planetary heating imbalance caused by greenhouse gases – for now. But, with the passing of time, the problem is likely to get much more serious. That’s because humans have a historical tendency to consistently discover and produce things, creating entirely new technologies and industries in the process: domesticated animals for farming; railways and automobiles; global air travel and shipping; personal computers, the internet and mobile phones. The result of such activities is that we end up using more and more energy, despite improved energy efficiency in nearly every area of technology.

During the past two centuries at least (and likely for much longer), our yearly energy use has doubled roughly every 30 to 50 years . Our energy use seems to be growing exponentially, a trend that shows every sign of continuing. We keep finding new things to do and almost everything we invent requires more and more energy: consider the enormous energy demands of cryptocurrency mining or the accelerating energy requirements of AI.

If this historical trend continues, scientists estimate waste heat will pose a problem in roughly 150-200 years that is every bit as serious as the current problem of global warming from greenhouse gases. However, deep heating will be more pernicious as we won’t be able to avoid it by merely shifting from one kind energy to another. A profound problem will loom before us: can we set strict limits on all the energy we use? Can we reign in the seemingly inexorable expansion of our activities to avoid destroying our own environment?

Deep warming is a problem hiding beneath global warming, but one that will become prominent if and when we manage to solve the more pressing issue of greenhouse gases. It remains just out of sight, which might explain why scientists only became concerned about the ‘waste heat’ problem around 15 years ago.

O ne of the first people to describe the problem is the Harvard astrophysicist Eric Chaisson, who discussed the issue of waste heat in a paper titled ‘Long-Term Global Heating from Energy Usage’ (2008). He concluded that our technological society may be facing a fundamental limit to growth due to ‘unavoidable global heating … dictated solely by the second law of thermodynamics, a biogeophysical effect often ignored when estimating future planetary warming scenarios’. When I emailed Chaisson to learn more, he told me the history of his thinking on the problem:

It was on a night flight, Paris-Boston [circa] 2006, after a UNESCO meeting on the environment when it dawned on me that the IPCC were overlooking something. While others on the plane slept, I crunched some numbers literally on the back of an envelope … and then hoped I was wrong, that is, hoped that I was incorrect in thinking that the very act of using energy heats the air, however slightly now.

The transformation of energy into heat is among the most ubiquitous processes of physics

Chaisson drafted the idea up as a paper and sent it to an academic journal. Two anonymous reviewers were eager for it to be published. ‘A third tried his damnedest to kill it,’ Chaisson said, the reviewer claiming the findings were ‘irrelevant and distracting’. After it was finally published, the paper got some traction when it was covered by a journalist and ran as a feature story on the front page of The Boston Globe . The numbers Chaisson crunched, predictions of our mounting waste heat, were even run on a supercomputer at the US National Center for Atmospheric Research, by Mark Flanner, a professor of earth system science. Flanner, Chaisson suspected at the time, was likely ‘out to prove it wrong’. But, ‘after his machine crunched for many hours’, he saw the same results that Chaisson had written on the back of an envelope that night in the plane.

Around the same time, also in 2008, two engineers, Nick Cowern and Chihak Ahn, wrote a research paper entirely independent of Chaisson’s work, but with similar conclusions. This was how I first came across the problem. Cowern and Ahn’s study estimated the total amount of waste heat we’re currently releasing to the environment, and found that it is, right now, quite small. But, like Chaisson, they acknowledged that the problem would eventually become serious unless steps were taken to avoid it.

That’s some of the early history of thinking in this area. But these two papers, and a few other analyses since, point to the same unsettling conclusion: what I am calling ‘deep warming’ will be a big problem for humanity at some point in the not-too-distant future. The precise date is far from certain. It might be 150 years , or 400, or 800, but it’s in the relatively near future, not the distant future of, say, thousands or millions of years. This is our future.

T he transformation of energy into heat is among the most ubiquitous processes of physics. As cars drive down roads, trains roar along railways, planes cross the skies and industrial plants turn raw materials into refined products, energy gets turned into heat, which is the scientific word for energy stored in the disorganised motions of molecules at the microscopic level. As a plane flies from Paris to Boston, it burns fuel and thrusts hot gases into the air, generates lots of sound and stirs up contrails. These swirls of air give rise to swirls on smaller scales which in turn make smaller ones until the energy ultimately ends up lost in heat – the air is a little warmer than before, the molecules making it up moving about a little more vigorously. A similar process takes place when energy is used by the tiny electrical currents inside the microchips of computers, silently carrying out computations. Energy used always ends up as heat. Decades ago, research by the IBM physicist Rolf Landauer showed that a computation involving even a single computing bit will release a certain minimum amount of heat to the environment.

How this happens is described by the laws of thermodynamics, which were described in the mid-19th century by scientists including Sadi Carnot in France and Rudolf Clausius in Germany. Two key ‘laws’ summarise its main principles.

The first law of thermodynamics simply states that the total quantity of energy never changes but is conserved. Energy, in other words, never disappears, but only changes form. The energy initially stored in an aircraft’s fuel, for example, can be changed into the energetic motion of the plane. Turn on an electric heater, and energy initially held in electric currents gets turned into heat, which spreads into the air, walls and fabric of your house. The total energy remains the same, but it markedly changes form.

We’re generating waste heat all the time with everything we do

The second law of thermodynamics, equally important, is more subtle and states that, in natural processes, the transformation of energy always moves from more organised and useful forms to less organised and less useful forms. For an aircraft, the energy initially concentrated in jet fuel ends up dissipated in stirred-up winds, sounds and heat spread over vast areas of the atmosphere in a largely invisible way. It’s the same with the electric heater: the organised useful energy in the electric currents gets dissipated and spread into the low-grade warmth of the walls, then leaks into the outside air. Although the amount of energy remains the same, it gradually turns into less organised, less usable forms. The end point of the energy process produces waste heat. And we’re generating it all the time with everything we do.

Data on world energy consumption shows that, collectively, all humans on Earth are currently using about 170,000 terawatt-hours (TWh), which is a lot of energy in absolute terms – a terawatt-hour is the total energy consumed in one hour by any process using energy at a rate of 1 trillion watts. This huge number isn’t surprising, as it represents all the energy being used every day by the billions of cars and homes around the world, as well as by industry, farming, construction, air traffic and so on. But, in the early 21st century , the warming from this energy is still much less than the planetary heating due to greenhouse gases.

Concentrations of greenhouse gases such as CO 2 and methane are quite small, and only make a fractional difference to how much of the Sun’s energy gets trapped in the atmosphere, rather than making it back out to space. Even so, this fractional difference has a huge effect because the stream of energy arriving from the Sun to Earth is so large. Current estimates of this greenhouse energy imbalance come to around 0.87 W per square meter, which translates into a total energy figure about 50 times larger than our waste heat. That’s reassuring. But as Cowern and Ahn wrote in their 2008 paper, things aren’t likely to stay this way over time because our energy usage keeps rising. Unless, that is, we can find some radical way to break the trend of using ever more energy.

O ne common objection to the idea of the deep warming is to claim that the problem won’t really arise. ‘Don’t worry,’ someone might say, ‘with efficient technology, we’re going to find ways to stop using more energy; though we’ll end up doing more things in the future, we’ll use less energy.’ This may sound plausible at first, because we are indeed getting more efficient at using energy in most areas of technology. Our cars, appliances and laptops are all doing more with less energy. If efficiency keeps improving, perhaps we can learn to run these things with almost no energy at all? Not likely, because there are limits to energy efficiency.

Over the past few decades, the efficiency of heating in homes – including oil and gas furnaces, and boilers used to heat water – has increased from less than 50 per cent to well above 90 per cent of what is theoretically possible. That’s good news, but there’s not much more efficiency to be realised in basic heating. The efficiency of lighting has also vastly improved, with modern LED lighting turning something like 70 per cent of the applied electrical energy into light. We will gain some efficiencies as older lighting gets completely replaced by LEDs, but there’s not a lot of room left for future efficiency improvements. Similar efficiency limits arise in the growing or cooking of food; in the manufacturing of cars, bikes and electronic devices; in transportation, as we’re taken from place to place; in the running of search engines, translation software, GPT-4 or other large-language models.

Even if we made significant improvements in the efficiencies of these technologies, we will only have bought a little time. These changes won’t delay by much the date when deep warming becomes a problem we must reckon with.

Optimising efficiencies is just a temporary reprieve, not a radical change in our human future

As a thought experiment, suppose we could immediately improve the energy efficiency of everything we do by a factor of 10 – a fantastically optimistic proposal. That is, imagine the energy output of humans on Earth has been reduced 10 times , from 170,000 TWh to 17,000 TWh . If our energy use keeps expanding, doubling every 30-50 years or so (as it has for centuries), then a 10-fold increase in waste heat will happen in just over three doubling times, which is about 130 years : 17,000 TWh doubles to 34,000 TWh , which doubles to 68,000 TWh , which doubles to 136,000 TWh , and so on. All those improvements in energy efficiency would quickly evaporate. The date when deep warming hits would recede by 130 years or so, but not much more. Optimising efficiencies is just a temporary reprieve, not a radical change in our human future.

Improvements in energy efficiency can also have an inverse effect on our overall energy use. It’s easy to think that if we make a technology more efficient, we’ll then use less energy through the technology. But economists are deeply aware of a paradoxical effect known as ‘rebound’, whereby improved energy efficiency, by making the use of a technology cheaper, actually leads to more widespread use of that technology – and more energy use too. The classic example, as noted by the British economist William Stanley Jevons in his book The Coal Question (1865), is the invention of the steam engine. This new technology could extract energy from burning coal more efficiently, but it also made possible so many new applications that the use of coal increased. A recent study by economists suggests that, across the economy, such rebound effects might easily swallow at least 50 per cent of any efficiency gains in energy use. Something similar has already happened with LED lights, for which people have found thousands of new uses.

If gains in efficiency won’t buy us lots of time, how about other factors, such as a reduction of the global population? Scientists generally believe that the current human population of more than 8 billion people is well beyond the limits of our finite planet, especially if a large fraction of this population aspires to the resource-intensive lifestyles of wealthy nations. Some estimates suggest that a more sustainable population might be more like 2 billion , which could reduce energy use significantly, potentially by a factor of three or four. However, this isn’t a real solution: again, as with the example of improved energy efficiency, a one-time reduction of our energy consumption by a factor of three will quickly be swallowed up by an inexorable rise in energy use. If Earth’s population were suddenly reduced to 2 billion – about a quarter of the current population – our energy gains would initially be enormous. But those gains would be erased in two doubling times, or roughly 60-100 years , as our energy demands would grow fourfold.

S o, why aren’t more people talking about this? The deep warming problem is starting to get more attention. It was recently mentioned on Twitter by the German climate scientist Stefan Rahmstorf, who cautioned that nuclear fusion, despite excitement over recent advances, won’t arrive in time to save us from our waste heat, and might make the problem worse. By providing another cheap source of energy, fusion energy could accelerate both the growth of our energy use and the reckoning of deep warming. A student of Rahmstorf’s, Peter Steiglechner, wrote his master’s thesis on the problem in 2018. Recognition of deep warming and its long-term implications for humanity is spreading. But what can we do about the problem?

Avoiding or delaying deep warming will involve slowing the rise of our waste heat, which means restricting the amount of energy we use and also choosing energy sources that exacerbate the problem as little as possible. Unlike the energy from fossil fuels or nuclear power, which add to our waste energy burden, renewable energy sources intercept energy that is already on its way to Earth, rather than producing additional waste heat. In this sense, the deep warming problem is another reason to pursue renewable energy sources such as solar or wind rather than alternatives such as nuclear fusion, fission or even geothermal power. If we derive energy from any of these sources, we’re unleashing new flows of energy into the Earth system without making a compensating reduction. As a result, all such sources will add to the waste heat problem. However, if renewable sources of energy are deployed correctly, they need not add to our deposition of waste heat in the environment. By using this energy, we produce no more waste heat than would have been created by sunlight in the first place.

Take the example of wind energy. Sunlight first stirs winds into motion by heating parts of the planet unequally, causing vast cells of convection. As wind churns through the atmosphere, blows through trees and over mountains and waves, most of its energy gets turned into heat, ending up in the microscopic motions of molecules. If we harvest some of this wind energy through turbines, it will also be turned into heat in the form of stored energy. But, crucially, no more heat is generated than if there had been no turbines to capture the wind.

The same can hold true for solar energy. In an array of solar cells, if each cell only collects the sunlight falling on it – which would ordinarily have been absorbed by Earth’s surface – then the cells don’t alter how much waste heat gets produced as they generate energy. The light that would have warmed Earth’s surface instead goes into the solar cells, gets used by people for some purpose, and then later ends up as heat. In this way we reduce the amount of heat being absorbed by Earth by precisely the same amount as the energy we are extracting for human use. We are not adding to overall planetary heating. This keeps the waste energy burden unchanged, at least in the relatively near future, even if we go on extracting and using ever larger amounts of energy.

Covering deserts in dark panels would absorb a lot more energy than the desert floor

Chaisson summarised the problem quite clearly in 2008:

I’m now of the opinion … that any energy that’s dug up on Earth – including all fossil fuels of course, but also nuclear and ground-sourced geothermal – will inevitably produce waste heat as a byproduct of humankind’s use of energy. The only exception to that is energy arriving from beyond Earth, this is energy here and now and not dug up, namely the many solar energies (plural) caused by the Sun’s rays landing here daily … The need to avoid waste heat is indeed the single, strongest, scientific argument to embrace solar energies of all types.

But not just any method of gathering solar energy will avoid the deep warming problem. Doing so requires careful engineering. For example, covering deserts with solar panels would add to planetary heating because deserts reflect a lot of incident light back out to space, so it is never absorbed by Earth (and therefore doesn’t produce waste heat). Covering deserts in dark panels would absorb a lot more energy than the desert floor and would heat the planet further.

We’ll also face serious problems in the long run if our energy appetite keeps increasing. Futurists dream of technologies deployed in space where huge panels would absorb sunlight that would otherwise have passed by Earth and never entered our atmosphere. Ultimately, they believe, this energy could be beamed down to Earth. Like nuclear energy, such technologies would add an additional energy source to the planet without any compensating removal of heating from the sunlight currently striking our planet’s surface. Any effort to produce more energy than is normally available from sunlight at Earth’s surface will only make our heating problems worse.

D eep warming is simply a consequence of the laws of physics and our inquisitive nature. It seems to be in our nature to constantly learn and develop new things, changing our environment in the process. For thousands of years, we have harvested and exploited ever greater quantities of energy in this pursuit, and we appear poised to continue along this path with the rapidly expanding use of renewable energy sources – and perhaps even more novel sources such as nuclear fusion. But this path cannot proceed indefinitely without consequences.

The logic that more energy equals more warming sets up a profound dilemma for our future. The laws of physics and the habits ingrained in us from our long evolutionary history are steering us toward trouble. We may have a technological fix for greenhouse gas warming – just shift from fossil fuels to cleaner energy sources – but there is no technical trick to get us out of the deep warming problem. That won’t stop some scientists from trying.

Perhaps, believing that humanity is incapable of reducing its energy usage, we’ll adopt a fantastic scheme to cool the planet, such as planetary-scale refrigeration or using artificially engineered tornadoes to transport heat from Earth’s surface to the upper atmosphere where it can be radiated away to space. As far-fetched as such approaches sound, scientists have given some serious thought to these and other equally bizarre ideas, which seem wholly in the realm of science fiction. They’re schemes that will likely make the problem worse not better.

We will need to transform the human story. It must become a story of doing less, not more

I see several possibilities for how we might ultimately respond. As with greenhouse gas warming, there will probably be an initial period of disbelief, denial and inaction, as we continue with unconstrained technological advance and growing energy use. Our planet will continue warming. Sooner or later, however, such warming will lead to serious disruptions of the Earth environment and its ecosystems. We won’t be able to ignore this for long, and it may provide a natural counterbalance to our energy use, as our technical and social capacity to generate and use ever more energy will be eroded. We may eventually come to some uncomfortable balance in which we just scrabble out a life on a hot, compromised planet because we lack the moral and organisational ability to restrict our energy use enough to maintain a sound environment.

An alternative would require a radical break with our past: using less energy. Finding a way to use less energy would represent a truly fundamental rupture with all of human history, something entirely novel. A rupture of this magnitude won’t come easily. However, if we could learn to view restrictions on our energy use as a non-negotiable element of life on Earth, we may still be able to do many of the things that make us essentially human: learning, discovering, inventing, creating. In this scenario, any helpful new technology that comes into use and begins using lots of energy would require a balancing reduction in energy use elsewhere. In such a way, we might go on with the future being perpetually new, and possibly better.

None of this is easily achieved and will likely mirror our current struggles to come to agreements on greenhouse gas heating. There will be vicious squabbles, arguments and profound polarisation, quite possibly major wars. Humanity will never have faced a challenge of this magnitude, and we won’t face up to it quickly or easily, I expect. But we must. Planetary heating is in our future – the very near future and further out as well. Many people will find this conclusion surprisingly hard to swallow, perhaps because it implies fundamental restrictions on our future here on Earth: we can’t go on forever using more and more energy, and, at the same time, expecting the planet’s climate to remain stable.

The world will likely be transformed by 2050. And, sometime after that, we will need to transform the human story. The narrative arc of humanity must become a tale of continuing innovation and learning, but also one of careful management. It must become a story, in energy terms, of doing less, not more. There’s no technology for entirely escaping waste heat, only techniques.

This is important to remember as we face up to the extremely urgent challenge of heating linked to fossil-fuel use and greenhouse gases. Global warming is just the beginning of our problems. It’s a testing ground to see if we can manage an intelligent and coordinated response. If we can handle this challenge, we might be better prepared, more capable and resilient as a species to tackle an even harder one.

Black-and-white photo of a man in a suit and hat grabbing another man by his collar in front of a bar with bottles.

Political philosophy

C L R James and America

The brilliant Trinidadian thinker is remembered as an admirer of the US but he also warned of its dark political future

Harvey Neptune

A suburban street with mountains in the background, featuring a girl on a bike, parked cars, and old furniture on the sidewalk in front of a house.

Progress and modernity

The great wealth wave

The tide has turned – evidence shows ordinary citizens in the Western world are now richer and more equal than ever before

Daniel Waldenström

Silhouette of a person walking through a spray of water at sunset with cars and buildings in the background.

Neuroscience

The melting brain

It’s not just the planet and not just our health – the impact of a warming climate extends deep into our cortical fissures

Clayton Page Aldern

A brick house with a tiled roof, surrounded by a well-maintained garden with bushes and colourful flowers.

Falling for suburbia

Modernists and historians alike loathed the millions of new houses built in interwar Britain. But their owners loved them

Michael Gilson

Close-up of a person’s hand using a smartphone in a dimly lit room with blurred lights in the background. The phone screen shows the text ‘How can I help you today?’ and a text input field.

Computing and artificial intelligence

Mere imitation

Generative AI has lately set off public euphoria: the machines have learned to think! But just how intelligent is AI?

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Anthropology

Your body is an archive

If human knowledge can disappear so easily, why have so many cultural practices survived without written records?

Helena Miton

Causes of global warming, explained

Human activity is driving climate change, including global temperature rise.

The average temperature of the Earth is rising at nearly twice the rate it was 50 years ago. This rapid warming trend cannot be explained by natural cycles alone, scientists have concluded. The only way to explain the pattern is to include the effect of greenhouse gases (GHGs) emitted by humans.

Current levels of the greenhouse gases carbon dioxide, methane, and nitrous oxide in our atmosphere are higher than at any point over the past 800,000 years , and their ability to trap heat is changing our climate in multiple ways .

IPCC conclusions

To come to a scientific conclusion on climate change and what to do about it, the United Nations in 1988 formed a group called the Intergovernmental Panel on Climate Change , or IPCC. The IPCC meets every few years to review the latest scientific findings and write a report summarizing all that is known about global warming. Each report represents a consensus, or agreement, among hundreds of leading scientists.

One of the first things the IPCC concluded is that there are several greenhouse gases responsible for warming, and humans emit them in a variety of ways. Most come from the combustion of fossil fuels in cars, buildings, factories, and power plants. The gas responsible for the most warming is carbon dioxide, or CO2. Other contributors include methane released from landfills, natural gas and petroleum industries, and agriculture (especially from the digestive systems of grazing animals); nitrous oxide from fertilizers; gases used for refrigeration and industrial processes; and the loss of forests that would otherwise store CO2.

a melting iceberg

Gaseous abilities

Different greenhouse gases have very different heat-trapping abilities. Some of them can trap more heat than an equivalent amount of CO2. A molecule of methane doesn't hang around the atmosphere as long as a molecule of carbon dioxide will, but it is at least 84 times more potent over two decades. Nitrous oxide is 264 times more powerful than CO2.

Other gases, such as chlorofluorocarbons, or CFCs—which have been banned in much of the world because they also degrade the ozone layer—have heat-trapping potential thousands of times greater than CO2. But because their emissions are much lower than CO2 , none of these gases trap as much heat in the atmosphere as CO2 does.

When those gases that humans are adding to Earth's atmosphere trap heat, it’s called the "greenhouse effect." The gases let light through but then keep much of the heat that radiates from the surface from escaping back into space, like the glass walls of a greenhouse. The more greenhouse gases in the atmosphere, the more dramatic the effect, and the more warming that happens.

Climate change continues

Despite global efforts to address climate change, including the landmark 2015 Paris climate agreement , carbon dioxide emissions from fossil fuels continue to rise, hitting record levels in 2018 .

Many people think of global warming and climate change as synonyms, but scientists prefer to use “climate change” when describing the complex shifts now affecting our planet’s weather and climate systems. Climate change encompasses not only rising average temperatures but also extreme weather events, shifting wildlife populations and and habitats, rising seas , and a range of other impacts.

Read next: Global Warming Effects

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  • CLIMATE CHANGE
  • ENVIRONMENT AND CONSERVATION
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The Science of Climate Change Explained: Facts, Evidence and Proof

Definitive answers to the big questions.

Credit... Photo Illustration by Andrea D'Aquino

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By Julia Rosen

Ms. Rosen is a journalist with a Ph.D. in geology. Her research involved studying ice cores from Greenland and Antarctica to understand past climate changes.

  • Published April 19, 2021 Updated Nov. 6, 2021

The science of climate change is more solid and widely agreed upon than you might think. But the scope of the topic, as well as rampant disinformation, can make it hard to separate fact from fiction. Here, we’ve done our best to present you with not only the most accurate scientific information, but also an explanation of how we know it.

How do we know climate change is really happening?

  • How much agreement is there among scientists about climate change?
  • Do we really only have 150 years of climate data? How is that enough to tell us about centuries of change?
  • How do we know climate change is caused by humans?
  • Since greenhouse gases occur naturally, how do we know they’re causing Earth’s temperature to rise?
  • Why should we be worried that the planet has warmed 2°F since the 1800s?
  • Is climate change a part of the planet’s natural warming and cooling cycles?
  • How do we know global warming is not because of the sun or volcanoes?
  • How can winters and certain places be getting colder if the planet is warming?
  • Wildfires and bad weather have always happened. How do we know there’s a connection to climate change?
  • How bad are the effects of climate change going to be?
  • What will it cost to do something about climate change, versus doing nothing?

Climate change is often cast as a prediction made by complicated computer models. But the scientific basis for climate change is much broader, and models are actually only one part of it (and, for what it’s worth, they’re surprisingly accurate ).

For more than a century , scientists have understood the basic physics behind why greenhouse gases like carbon dioxide cause warming. These gases make up just a small fraction of the atmosphere but exert outsized control on Earth’s climate by trapping some of the planet’s heat before it escapes into space. This greenhouse effect is important: It’s why a planet so far from the sun has liquid water and life!

However, during the Industrial Revolution, people started burning coal and other fossil fuels to power factories, smelters and steam engines, which added more greenhouse gases to the atmosphere. Ever since, human activities have been heating the planet.

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Where it was cooler or warmer in 2020 compared with the middle of the 20th century

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Global average temperature compared with the middle of the 20th century

+0.75°C

–0.25°

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30 billion metric tons

Carbon dioxide emitted worldwide 1850-2017

Rest of world

Other developed

European Union

Developed economies

Other countries

United States

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E.U. and U.K.

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

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  • Updated on  
  • Sep 21, 2023

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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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Global Warming: A Very Short Introduction (2nd edn)

A newer edition of this book is available.

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10 (page 173) p. 173 Conclusion

  • Published: November 2008
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The ‘Conclusion’ confirms that global warming is the major challenge for our global society. There is very little doubt that global warming will change our climate in the next century. So what are the solutions to global warming? First, there must be an international political solution. Second, funding for developing cheap and clean energy production must be increased, as all economic development is based on increasing energy usage. We must not pin all our hopes on global politics and clean energy technology, so we must prepare for the worst and adapt. If implemented now, a lot of the costs and damage that could be caused by changing climate can be mitigated.

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What evidence exists that Earth is warming and that humans are the main cause?

We know the world is warming because people have been recording daily high and low temperatures at thousands of weather stations worldwide, over land and ocean, for many decades and, in some locations, for more than a century. When different teams of climate scientists in different agencies (e.g., NOAA and NASA) and in other countries (e.g., the U.K.’s Hadley Centre) average these data together, they all find essentially the same result: Earth’s average surface temperature has risen by about 1.8°F (1.0°C) since 1880. 

Bar graph of global temperature anomalies with an overlay of a line graph of atmospheric carbon dioxide from 1850-2023

( bar chart ) Yearly temperature compared to the twentieth-century average from 1850–2023. Red bars mean warmer-than-average years; blue bars mean colder-than-average years. (line graph) Atmospheric carbon dioxide amounts: 1850-1958 from IAC , 1959-2023 from NOAA Global Monitoring Lab . NOAA Climate.gov graph, adapted from original by Dr. Howard Diamond (NOAA ARL).

In addition to our surface station data, we have many different lines of evidence that Earth is warming ( learn more ). Birds are migrating earlier, and their migration patterns are changing.  Lobsters  and  other marine species  are moving north. Plants are blooming earlier in the spring. Mountain glaciers are melting worldwide, and snow cover is declining in the Northern Hemisphere (Learn more  here  and  here ). Greenland’s ice sheet—which holds about 8 percent of Earth’s fresh water—is melting at an accelerating rate ( learn more ). Mean global sea level is rising ( learn more ). Arctic sea ice is declining rapidly in both thickness and extent ( learn more ).

Aerial photo of glacier front with a graph overlay of Greenland ice mass over time

The Greenland Ice Sheet lost mass again in 2020, but not as much as it did 2019. Adapted from the 2020 Arctic Report Card, this graph tracks Greenland mass loss measured by NASA's GRACE satellite missions since 2002. The background photo shows a glacier calving front in western Greenland, captured from an airplane during a NASA Operation IceBridge field campaign. Full story.

We know this warming is largely caused by human activities because the key role that carbon dioxide plays in maintaining Earth’s natural greenhouse effect has been understood since the mid-1800s. Unless it is offset by some equally large cooling influence, more atmospheric carbon dioxide will lead to warmer surface temperatures. Since 1800, the amount of carbon dioxide in the atmosphere  has increased  from about 280 parts per million to 410 ppm in 2019. We know from both its rapid increase and its isotopic “fingerprint” that the source of this new carbon dioxide is fossil fuels, and not natural sources like forest fires, volcanoes, or outgassing from the ocean.

DIgital image of a painting of a fire burning in a coal pile in a small village

Philip James de Loutherbourg's 1801 painting, Coalbrookdale by Night , came to symbolize the start of the Industrial Revolution, when humans began to harness the power of fossil fuels—and to contribute significantly to Earth's atmospheric greenhouse gas composition. Image from Wikipedia .

Finally, no other known climate influences have changed enough to account for the observed warming trend. Taken together, these and other lines of evidence point squarely to human activities as the cause of recent global warming.

USGCRP (2017). Climate Science Special Report: Fourth National Climate Assessment, Volume 1 [Wuebbles, D.J., D.W. Fahey, K.A. Hibbard, D.J. Dokken, B.C. Stewart, and T.K. Maycock (eds.)]. U.S. Global Change Research Program, Washington, DC, USA, 470 pp, doi:  10.7930/J0J964J6 .

National Fish, Wildlife, and Plants Climate Adaptation Partnership (2012):  National Fish, Wildlife, and Plants Climate Adaptation Strategy . Association of Fish and Wildlife Agencies, Council on Environmental Quality, Great Lakes Indian Fish and Wildlife Commission, National Oceanic and Atmospheric Administration, and U.S. Fish and Wildlife Service. Washington, D.C. DOI: 10.3996/082012-FWSReport-1

IPCC (2019). Summary for Policymakers. In: IPCC Special Report on the Ocean and Cryosphere in a Changing Climate. [H.-O. Pörtner, D.C. Roberts, V. Masson-Delmotte, P. Zhai, M. Tignor, E. Poloczanska, K. Mintenbeck, A. Alegría, M. Nicolai, A. Okem, J. Petzold, B. Rama, N.M. Weyer (eds.)]. In press.

NASA JPL: "Consensus: 97% of climate scientists agree."  Global Climate Change . A website at NASA's Jet Propulsion Laboratory (climate.nasa.gov/scientific-consensus). (Accessed July 2013.)

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Global Warming Definition, Causes, Effects, Impacts, Solutions_1.1

Global Warming Definition, Causes, Effects, Impacts, Solutions

Global Warming is a long-term increase in average global temperature. Read about Global Warming Definition, Causes, Effects, Impact on Climate Change & Solutions for the UPSC exam.

Global Warming

Table of Contents

What is Global Warming?

Global Warming is a long-term increase in average global temperature. It is considered a natural phenomenon, but anthropogenic activities on earth, particularly post Industrial Revolution , have led to an increase in the rate of this temperature increase. Various Reports published by the International Panel on Climate Change (IPCC) have time and again highlighted that since 1850 human activities have led to an increase of about 1 degree Celsius in average global temperature. Most of this warming has taken place in the second half of the 20th century. The fact that 5 of the hottest recorded year have occurred since 2015 can help us better understand the calamitous impact of anthropogenic activities.

Global Warming Causes

Green House Gases also known as GHGs in the atmosphere trap the solar radiations that are reflected by the earth’s surface. Under normal circumstances, most of these radiations escape into outer space. However, the release of GHGs by anthropogenic activities has increased their concentration in the atmosphere. Thus, the earth is getting hotter and hotter. 

Some of the common GHGs include carbon dioxide, methane, nitrous oxide, chlorofluorocarbons, and water vapour, among others. The global warming potential of each GHG is different. For example, methane has a 25-time warming potential than carbon dioxide. Similarly, nitrous oxide has more than 250 times the warming potential than carbon dioxide. The top  anthropogenic activities that are responsible for the release of GHGs are shown below.

Global Warming Definition, Causes, Effects, Impacts, Solutions_4.1

Global Warming and Green House Effect

Both phenomena are related to each other. Green House Gases also known as GHGs in the atmosphere trap the solar radiations that are reflected by the earth’s surface. Under normal circumstances, most of these radiations escape into outer space. However, the release of GHGs by anthropogenic activities has increased their concentration in the atmosphere. This is the primary cause of Global Warming . 

Global Warming Effects

Increase in the average temperature of the earth.

According to IPCC reports, human-induced global warming is responsible for nearly 1 degree Celsius temperature rise vis a vis pre-industrial level. Data from NASA suggest that 2016 has been the hottest year on record.

Frequency of Extreme Weather Events is Increasing

Across the globe, extreme weather events have increased in occurrence. For example, forest fires in California have become an annual event. Also, it is increasing in frequency each year. Most recently, we have recorded the phenomena of heat waves in Antarctica. The intensity of cyclones in the Bay of Bengal region has increased. Similarly, the frequency of occurrence of El Niño and La Niña has reduced from once in 8–10 years to once in 3–4 years now. More frequent episodes of floods and drought are being recorded every year across the world.

Melting of Ice

According to IPCC, there is 10% less permafrost in North Hemisphere at present compared to the 1900s. Remote sensing data suggest Arctic ice is melting fast. Experts suggest that not only will the sea level rise with the melting of glaciers, but there is also a danger of new bacteria and viruses being released into the environment which has so far been trapped in ice sheets. This may lead to outbreaks of disease and pandemics which are beyond the control of human medical sciences.

Sea Level Rise and Acidification of Ocean

A report published by WMO, suggests that the rate of sea level rise has doubled for the period between 2013 and 2021 compared to the rate for the period between 1993 and 2002. Earth scientists are suggesting that if this phenomenon continues, many human-inhabited coastal areas will be submerged into the sea in the coming decades. Also, with the concentration of carbon dioxide rising in the atmosphere, oceans are absorbing more of it. This is leading to ocean acidification. The impact of this phenomenon can be disastrous for ocean biodiversity, particularly the coral reefs. 

Adverse Impact on Terrestrial Ecosystems of the Earth

It has been recorded that many flora and fauna species are heading northwards in Northern Hemisphere. Significant changes have been observed in the migratory movements of birds across the world. Early arrival to their summer feeding and breeding grounds is quite evident. Expert biologists suggest that rising temperatures in the tropical and subtropical regions may lead to an outbreak of new diseases, which in turn may render many floral and faunal species extinct.

Social and Economic Impact

A rising number of extreme weather events will have an adverse impact on agriculture and fisheries. Rising global temperatures will have a negative impact on the productivity of human beings, particularly in tropical and subtropical regions of the earth. The impact on life and livelihoods of indigenous people across the world will be even more pronounced. 

Global Warming Solutions

Global cooperation for reduction of emissions.

It is time that the target of containing the global average temperature rise within 1.5 degrees Celsius of pre-industrial levels is taken seriously. Also, global efforts should be based on a spirit of Common But Differentiated Responsibility. This will ensure that historical injustices done to the global south are duly acknowledged, and they have an equal chance to transform themselves into developed countries. Countries must act proactively to achieve Net Zero Emission status at the earliest. 

Transition to Cleaner and Greener Forms of Energy

Thermal power plants based on coal should be made more efficient and inefficient ones should be phased off. Also, mass adoption of renewable forms of energy like solar should be promoted. Similarly, avenues for using hydrogen as energy fuel should be looked into. We must also explore the possibility of Nuclear fusion for energy generation, in addition to making nuclear fission-based energy generation safer.

Changes in Agricultural Practices and Land Use

Agriculture based on the use of nitrogenous fertilizers must be replaced with organic farming techniques. Also, methane gas released from agricultural and cattle waste must be trapped as biogas for domestic usage. Massive afforestation drives must be organized. Urban governments must make it a point to include green spaces in urban planning.

Improving Transportation System

The advent of E-vehicles is a welcome change, but we need to make the batteries used in these vehicles more efficient. Urban planners must make public transportation systems inherent as a benchmark of good urban planning. Also, urban planning should be such that it promotes more walking and cycling habits among the residents. 

Behavioural Changes

All the above discussions will have no meaning if we as individuals are not sensitive enough. We need to make reducing, reusing and recycling a mantra of our living. It should be our civic duty to save water, and wildlife and raise awareness among others. 

Solar Geoengineering

Solar geoengineering, a proposed climate intervention method, aims to counteract global warming by reflecting a portion of the sun’s rays back into space. One prominent approach involves injecting substances like sulphur dioxide into the upper atmosphere to create reflective aerosols. These particles can scatter sunlight, reducing the Earth’s temperature. However, solar geoengineering is a topic of debate, with concerns about its side effects, such as disrupted weather patterns and potential geopolitical risks. Research in this field is ongoing, but it remains a theoretical concept with limited practical implementation.

Can Solar Geoengineering Halt Global Warming?

Solar geoengineering, specifically solar radiation management (SRM), is under scrutiny as a potential method to mitigate global warming. SRM involves reflecting sunlight away from Earth, often by injecting substances like sulphur dioxide into the upper atmosphere to create reflective aerosols. However, its effectiveness remains a subject of debate, with concerns about potential side effects and ethical implications. While research in this field is ongoing, solar geoengineering is currently in a theoretical stage, with limited practical implementation.

Global Warming Conclusion

It is rightly said that “Charity begins at home.” Climate action will be more efficient if we go by this spirit. To begin with, each individual can make sure that what is happening in their house and immediate surroundings is in harmony with the environment. If this can happen, all the policies we are making at the local, national, regional and global levels will give far better results. 

Global Warming UPSC

Each year, we read about rising global temperatures. Also, catching the headlines is the news related to disasters caused by events like cyclones, forest fires, floods and drought. All these phenomena can be attributed to one single cause which is global warming. 

Global Warming is a long-term increase in average global temperature. It is considered a natural phenomenon, but anthropogenic activities on earth, particularly post-Industrial Revolution, have led to an increase in the rate of this temperature increase.

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Why is global warming a problem?

Global Warming at present rate can lead to disastrous impacts like rising sea level, out break of new diseases, extreme weather events among others.

What are 3 causes of global warming?

Human induced green house gas emission due to activities like agriculture, industrial emissions, transportation are the top 3 causes of global warming.

What are 5 effects of global warming?

Rising sea level, out break of new diseases, extreme weather events, changes in biodiversity and melting of glaciers are top 5 effects of global warming.

Why global warming is important?

Global warming at its natural rate is important to keep up the temperature of earth within the range that makes it habitable. This makes global warming important.

Can we control global warming?

Number of mitigation measures like shifting to cleaning forms of energy and transportation can be taken to control global warming.

Who help with global warming?

Global Warming is a collective challenge for entire humanity. Citizens, civil societies, governments and businesses must act in unison to address it.

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COMMENTS

  1. Essay on Global Warming with Samples (150, 250, 500 Words

    The earth's surface emits energy into the atmosphere in the form of heat, keeping the balance with the incoming energy. Global warming depletes the ozone layer, bringing about the end of the world. There is a clear indication that increased global warming will result in the extinction of all life on Earth's surface.

  2. How to Write an Essay About Global Warming: 15 Steps

    Utilize figures and statistics that could not be bettered to speak about the seriousness of the problem. Be specific and don't waffle, since the core of the matter you are to develop in the body of the essay. Write a thesis statement, which is the embodiment of the problem. 2. Cut to the chase and write the body.

  3. Global warming

    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 ...

  4. Essay on Global Warming

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  5. Essay On Global Warming

    Essay On Global Warming in 300 Words. Global warming is a phenomenon where the earth's average temperature rises due to increased amounts of greenhouse gases. Greenhouse gases such as carbon dioxide, methane and ozone trap the incoming radiation from the sun. This effect creates a natural "blanket", which prevents the heat from escaping ...

  6. Introductory essay

    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.

  7. Global Warming

    Global warming is the long-term warming of the planet's overall temperature. Though this warming trend has been going on for a long time, its pace has significantly increased in the last hundred years due to the burning of fossil fuels.As the human population has increased, so has the volume of . fossil fuels burned.. Fossil fuels include coal, oil, and natural gas, and burning them causes ...

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  9. Global Warming Essay in English (Causes and Solutions)

    100 Words Essay on Global Warming. An increase in the Earth's average global temperature is known as global warming. Global warming is mostly caused by burning more fossil fuels and the emission of hazardous pollutants into the atmosphere. Living things can suffer greatly as a result of global warming.

  10. Steps To Follow While Writing An Essay On Climate Change

    Structure your essay in a logical way: introduce your thesis, develop your ideas in at least 2 parts that contain several paragraphs, and draw a conclusion. Bottom line. Writing an essay on global warming and climate change is essentially reflecting on the inevitable consequence of the irresponsible behavior of people inhabiting the planet.

  11. How To Write A Winning Essay On Global Warming

    Every paragraph on global warming essays should explain a different point. Conclusion: After bringing out your argument cohesively, the conclusion allows you to tie the points neatly. You should summarize the entire essay in a few sentences. Note that the conclusion should not introduce new points.

  12. Causes of Global Warming Essay

    500 Words Essay on Causes of Global Warming. The constant rise in atmospheric temperature has made global warming a prominent worry in the modern age. It keeps becoming stronger and stronger. ... In order to prevent future generations from suffering, our generation needs to start caring for the environment. Factors Responsible for Global ...

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  14. What are the effects of global warming?

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    Average global temperatures have increased by 2.2 degrees Fahrenheit, or 1.2 degrees Celsius, since 1880, with the greatest changes happening in the late 20th century. Land areas have warmed more ...

  18. 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 ...

  19. Global Warming: A Very Short Introduction

    Abstract. Global warming is arguably the most critical and controversial issue facing the world in the twenty-first century. Global Warming: A Very Short Introduction provides a concise and accessible explanation of the key topics in the debate: how and why changes are occurring, setting these changes in the context of past global climate change, looking at the predicted impact of climate ...

  20. Global Warming: A Very Short Introduction

    Collection: Very Short Introductions. Global warming is one of the few scientific theories that makes us examine the whole basis of modern society. It is a theory that has politicians arguing, sets nations against each other, queries individual choices of lifestyle, and ultimately asks questions about humanity's relationship with the rest of ...

  21. What evidence exists that Earth is warming and that humans are the main

    Full story. We know this warming is largely caused by human activities because the key role that carbon dioxide plays in maintaining Earth's natural greenhouse effect has been understood since the mid-1800s. Unless it is offset by some equally large cooling influence, more atmospheric carbon dioxide will lead to warmer surface temperatures.

  22. Global Warming Definition, Causes, Effects, Impacts, Solutions

    What is Global Warming? Global Warming is a long-term increase in average global temperature. It is considered a natural phenomenon, but anthropogenic activities on earth, particularly post Industrial Revolution, have led to an increase in the rate of this temperature increase.Various Reports published by the International Panel on Climate Change (IPCC) have time and again highlighted that ...