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articles to read about climate change

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Century of Science: Theme

Our climate change crisis

The climate change emergency.

Even in a world increasingly battered by weather extremes, the summer 2021 heat wave in the Pacific Northwest stood out. For several days in late June, cities such as Vancouver, Portland and Seattle baked in record temperatures that killed hundreds of people. On June 29 Lytton, a village in British Columbia, set an all-time heat record for Canada, at 121° Fahrenheit (49.6° Celsius); the next day, the village was incinerated by a wildfire.

Within a week, an international group of scientists had analyzed this extreme heat and concluded it would have been virtually impossible without climate change caused by humans. The planet’s average surface temperature has risen by at least 1.1 degree Celsius since preindustrial levels of 1850–1900 — because people are loading the atmosphere with heat-trapping gases produced during the burning of fossil fuels, such as coal and gas, and from cutting down forests.

A little over 1 degree of warming may not sound like a lot. But it has already been enough to fundamentally transform how energy flows around the planet. The pace of change is accelerating, and the consequences are everywhere. Ice sheets in Greenland and Antarctica are melting, raising sea levels and flooding low-lying island nations and coastal cities. Drought is parching farmlands and the rivers that feed them. Wildfires are raging. Rains are becoming more intense, and weather patterns are shifting .

Australian Wildfires. Research links the fires to human-caused climate change.

The roots of understanding this climate emergency trace back more than a century and a half. But it wasn’t until the 1950s that scientists began the detailed measurements of atmospheric carbon dioxide that would prove how much carbon is pouring from human activities. Beginning in the 1960s, researchers began developing comprehensive computer models that now illuminate the severity of the changes ahead.

Global average temperature change, 1850–2021

articles to read about climate change

Long-term climate datasets show that Earth’s average surface temperature (combined land and ocean) has increased by more than 1 degree Celsius since preindustrial times. Temperature change is the difference from the 1850–1900 average.

Today we know that climate change and its consequences are real, and we are responsible. The emissions that people have been putting into the air for centuries — the emissions that made long-distance travel, economic growth and our material lives possible — have put us squarely on a warming trajectory . Only drastic cuts in carbon emissions, backed by collective global will, can make a significant difference.

“What’s happening to the planet is not routine,” says Ralph Keeling, a geochemist at the Scripps Institution of Oceanography in La Jolla, Calif. “We’re in a planetary crisis.” — Alexandra Witze

Tracking a Greenland glacier

The calving front of Greenland’s Helheim Glacier, which flows toward the sea where it crumbles into icebergs, held roughly the same position from the 1970s until 2001 (left, the calving front is to the far right of the image). But by 2005 (right), it had retreated 7.5 kilometers toward its source. 

Helheim Glacier side by side

The first climate scientists

One day in the 1850s, Eunice Newton Foote, an amateur scientist and women’s rights activist living in upstate New York, put two glass jars in sunlight. One contained regular air — a mix of nitrogen, oxygen and other gases including carbon dioxide — while the other contained just CO 2 . Both had thermometers in them. As the sun’s rays beat down, Foote observed that the jar of CO 2 alone heated more quickly, and was slower to cool, than the one containing plain air.

Illustration of Eunice Newton Foote. Hers were some of the first studies of climate change.

The results prompted Foote to muse on the relationship between CO 2 , the planet and heat. “An atmosphere of that gas would give to our earth a high temperature,” she wrote in an 1856 paper summarizing her findings .

Three years later, working independently and apparently unaware of Foote’s discovery, Irish physicist John Tyndall showed the same basic idea in more detail. With a set of pipes and devices to study the transmission of heat, he found that CO 2 gas, as well as water vapor, absorbed more heat than air alone. He argued that such gases would trap heat in Earth’s atmosphere, much as panes of glass trap heat in a greenhouse, and thus modulate climate. “As a dam built across a river causes a local deepening of the stream, so our atmosphere, thrown as a barrier across the terrestrial rays, produces a local heightening of the temperature at the Earth’s surface,” he wrote in 1862.

Tyndall contraption

Today Tyndall is widely credited with the discovery of how what are now called greenhouse gases heat the planet, earning him a prominent place in the history of climate science. Foote faded into relative obscurity — partly because of her gender, partly because her measurements were less sensitive. Yet their findings helped kick off broader scientific exploration of how the composition of gases in Earth’s atmosphere affects global temperatures.

Carbon floods in

Humans began substantially affecting the atmosphere around the turn of the 19th century, when the Industrial Revolution took off in Britain. Factories burned tons of coal; fueled by fossil fuels, the steam engine revolutionized transportation and other industries. In the decades since, fossil fuels including oil and natural gas have been harnessed to drive a global economy. All these activities belch gases into the air.

Yet Svante Arrhenius, a Swedish physical chemist, wasn’t worried about the Industrial Revolution when he began thinking in the late 1800s about changes in atmospheric CO 2 levels. He was instead curious about ice ages — including whether a decrease in volcanic eruptions, which can put CO 2 into the atmosphere, would lead to a future ice age. Bored and lonely in the wake of a divorce, Arrhenius set himself to months of laborious calculations involving moisture and heat transport in the atmosphere at different zones of latitude. In 1896 he reported that halving the amount of CO 2 in the atmosphere could indeed bring about an ice age — and that doubling CO 2 would raise global temperatures by around 5 to 6 degrees C.

It was a remarkably prescient finding for work that, out of necessity, had simplified Earth’s complex climate system down to just a few variables. Today, estimates for how much the planet will warm through a doubling of CO 2 — a measure known as climate sensitivity — range between 1.5 degrees and 4.5 degrees Celsius. (The range remains broad in part because scientists now incorporate their understanding of many more planetary feedbacks than were recognized in Arrhenius’ day.)  

But Arrhenius’ findings didn’t gain much traction with other scientists at the time. The climate system seemed too large, complex and inert to change in any meaningful way on a timescale that would be relevant to human society. Geologic evidence showed, for instance, that ice ages took thousands of years to start and end. What was there to worry about? And other laboratory experiments — later shown to be flawed — appeared to indicate that changing levels of CO 2 would have little impact on heat absorption in the atmosphere. Most scientists aware of the work came to believe that Arrhenius had been proved wrong.

Guy Callendar chart

One researcher, though, thought the idea was worth pursuing. Guy Stewart Callendar, a British engineer and amateur meteorologist, had tallied weather records over time, obsessively enough to determine that average temperatures were increasing at 147 weather stations around the globe. In 1938, in a paper in a Royal Meteorological Society journal , he linked this temperature rise to the burning of fossil fuels. Callendar estimated that fossil fuel burning had put around 150 billion metric tons of CO 2 into the atmosphere since the late 19th century.

Antarctic traverse

Like many of his day, Callendar didn’t see global warming as a problem. Extra CO 2 would surely stimulate plants to grow and allow crops to be farmed in new regions. “In any case the return of the deadly glaciers should be delayed indefinitely,” he wrote. But his work revived discussions tracing back to Tyndall and Arrhenius about how the planetary system responds to changing levels of gases in the atmosphere. And it began steering the conversation toward how human activities might drive those changes.

When World War II broke out the following year, the global conflict redrew the landscape for scientific research. Hugely important wartime technologies, such as radar and the atomic bomb, set the stage for “big science” studies that brought nations together to tackle high-stakes questions of global reach. And that allowed modern climate science to emerge.

The Keeling curve and climate change

One major postwar effort was the International Geophysical Year, an 18-month push in 1957–1958 that involved a wide array of scientific field campaigns including exploration in the Arctic and Antarctica. Climate change wasn’t a high research priority during the IGY, but some scientists in California, led by Roger Revelle of the Scripps Institution of Oceanography in La Jolla, used the funding influx to begin a project they’d long wanted to do. The goal was to measure CO 2 levels at different locations around the world, accurately and consistently.

Keeling portrait

The job fell to geochemist Charles David Keeling, who put ultraprecise CO 2 monitors in Antarctica and on the Hawaiian volcano of Mauna Loa. Funds soon ran out to maintain the Antarctic record, but the Mauna Loa measurements continued. Thus was born one of the most iconic datasets in all of science — the “Keeling curve,” which tracks the rise of atmospheric CO 2 . When Keeling began his measurements in 1958, CO 2 made up 315 parts per million of the global atmosphere. Within just a few years it became clear that the number was increasing year by year. Because plants take up CO 2 as they grow in spring and summer and release it as they decompose in fall and winter, CO 2 concentrations rose and fell each year in a sawtooth pattern — but superimposed on that pattern was a steady march upward.  

Monthly average CO 2 concentrations at Mauna Loa Observatory

Keeling and his curve side by side

Atmospheric carbon dioxide measurements collected continuously since 1958 at Mauna Loa volcano in Hawaii show the rise due to human activities. The visible sawtooth pattern is due to seasonal plant growth: Plants take up CO 2 in the growing seasons, then release it as they decompose in fall and winter.

“The graph got flashed all over the place — it was just such a striking image,” says Ralph Keeling, who is Charles David Keeling’s son. Over the years, as the curve marched higher, “it had a really important role historically in waking people up to the problem of climate change.” The Keeling curve has been featured in countless earth science textbooks, congressional hearings and in Al Gore’s 2006 documentary on climate change, An Inconvenient Truth . Each year the curve keeps going up: In 2016 it passed 400 ppm of CO 2 in the atmosphere, as measured during its typical annual minimum in September. In 2021, the annual minimum was 413 ppm. (Before the Industrial Revolution, CO 2 levels in the atmosphere had been stable for centuries at around 280 ppm.)

Around the time that Keeling’s measurements were kicking off, Revelle also helped develop an important argument that the CO 2 from human activities was building up in Earth’s atmosphere. In 1957 he and Hans Suess, also at Scripps at the time, published a paper that traced the flow of radioactive carbon through the oceans and the atmosphere. They showed that the oceans were not capable of taking up as much CO 2 as previously thought; the implication was that much of the gas must be going into the atmosphere instead. “Human beings are now carrying out a large-scale geophysical experiment of a kind that could not have happened in the past nor be reproduced in the future,” Revelle and Suess wrote in the paper. It’s one of the most famous sentences in earth science history.

Suess

“Human beings are now carrying out a large-scale geophysical experiment of a kind that could not have happened in the past nor be reproduced in the future.”

Here was the insight underlying modern climate science: Atmosheric CO 2 is increasing, and humans are causing the buildup. Revelle and Suess became the final piece in a puzzle dating back to Svante Arrhenius and John Tyndall.

“I tell my students that to understand the basics of climate change, you need to have the cutting-edge science of the 1860s, the cutting-edge math of the 1890s and the cutting-edge chemistry of the 1950s,” says Joshua Howe, an environmental historian at Reed College in Portland, Ore.

Environmental awareness grows

As this scientific picture began to emerge in the late 1950s, Science News was on the story. A March 1, 1958 article in Science News Letter , “Weather May Be Warming,” described a warm winter month in the Northern Hemisphere. It posits three theories, including that “carbon dioxide poured into the atmosphere by a booming industrial civilization could have caused the increase. By burning up about 100 billion tons of coal and oil since 1900, man himself may be changing the climate.” By 1972, the magazine was reporting on efforts to expand global atmospheric greenhouse gas monitoring beyond Keeling’s work; two years later, the U.S. National Oceanic and Atmospheric Administration launched its own CO 2 monitoring network, now the biggest in the world.

Science News coverage

Environmental awareness on other issues grew in the 1960s and 1970s. Rachel Carson catalyzed the modern U.S. environmental movement in 1962 when she published a magazine series and then a book, Silent Spring , condemning the pesticide DDT for its ecological impacts. 1970 saw the celebration of the first Earth Day , in the United States and elsewhere, and in India in 1973 a group of women led a series of widely publicized protests against deforestation. This Chipko movement explicitly linked environmental protection with protecting human communities, and helped seed other environmental movements.

The fragility of global energy supplies was also becoming more obvious through the 1970s. The United States, heavily dependent on other countries for oil imports, entered a gas shortage in 1973–74 when Arab members of the Organization of the Petroleum Exporting Countries cut off oil supplies because of U.S. government support for Israel. The shortage prompted more people to think about the finiteness of natural resources and the possibility of overtaxing the planet. — Alexandra Witze

Welland, Ontario environmental movement pic

Climate change evidence piles up

Observational data collected throughout the second half of the 20th century helped researchers gradually build their understanding of how human activities were transforming the planet. “It was a sort of slow accretion of evidence and concern,” says historian Joshua Howe of Reed College.

Environmental records from the past, such as tree rings and ice cores, established that the current changes in climate are unusual compared with the recent past. Yet such paleoclimatology data also showed that climate has changed quickly in the deep past — driven by triggers other than human activity, but with lessons for how abrupt planetary transformations can be.

Ice cores pulled from ice sheets, such as that atop Greenland, offer some of the most telling insights for understanding past climate change. Each year snow falls atop the ice and compresses into a fresh layer of ice representing climate conditions at the time it formed. The abundance of certain forms, or isotopes, of oxygen and hydrogen in the ice allows scientists to calculate the temperature at which it formed, and air bubbles trapped within the ice reveal how much carbon dioxide and other greenhouse gases were in the atmosphere at that time. So drilling down into an ice sheet is like reading the pages of a history book that go back in time the deeper you go.

Scientist with GRIP project

Scientists began reading these pages in the early 1960s, using ice cores drilled at a U.S. military base in northwest Greenland . Contrary to expectations that past climates were stable, the cores hinted that abrupt climate shifts had happened over the last 100,000 years. By 1979, an international group of researchers was pulling another deep ice core from a second location in Greenland — and it, too, showed that abrupt climate change had occurred in the past. In the late 1980s and early 1990s a pair of European- and U.S.-led drilling projects retrieved even deeper cores from near the top of the ice sheet, pushing the record of past temperatures back a quarter of a million years.

Antarctic drilling

Together with other sources of information, such as sediment cores drilled from the seafloor and molecules preserved in ancient rocks, the ice cores allowed scientists to reconstruct past temperature changes in extraordinary detail. Many of those changes happened alarmingly fast. For instance, the climate in Greenland warmed abruptly more than 20 times in the last 80,000 years, with the changes occurring in a matter of decades. More recently, a cold spell that set in around 13,000 years ago suddenly came to an end around 11,500 years ago — and temperatures in Greenland rose 10 degrees Celsius in a decade.

Evidence for such dramatic climate shifts laid to rest any lingering ideas that global climate change would be slow and unlikely to occur on a timescale that humans should worry about. “It’s an important reminder of how ‘tippy’ things can be,” says Jessica Tierney, a paleoclimatologist at the University of Arizona in Tucson.

More evidence of global change came from Earth-observing satellites, which brought a new planet-wide perspective on global warming beginning in the 1960s. From their viewpoint in the sky, satellites have measured the steady rise in global sea level — currently 3.4 millimeters per year and accelerating, as warming water expands and as ice sheets melt — as well as the rapid decline in ice left floating on the Arctic Ocean each summer at the end of the melt season. Gravity-sensing satellites have ‘weighed’ the Antarctic and Greenlandic ice sheets from above since 2002, reporting that more than 400 billion metric tons of ice are lost each year.

Temperature observations taken at weather stations around the world also confirm that we are living in the hottest years on record. The 10 warmest years since record keeping began in 1880 have all occurred since 2005. And nine of those 10 have come since 2010.

What’s more, extreme weather is hammering the planet more and more frequently. That 2021 heat wave in the Pacific Northwest, for instance, is just a harbinger of what’s to come. — Alexandra Witze

Worrisome predictions from climate models

By the 1960s, there was no denying that the planet was warming. But understanding the consequences of those changes — including the threat to human health and well-being — would require more than observational data. Looking to the future depended on computer simulations: complex calculations of how energy flows through the planetary system. Such models of the climate system have been crucial to developing projections for what we can expect from greenhouse warming.

Hurricane Laura

A first step in building climate models was to connect everyday observations of weather to the concept of forecasting future climate. During World War I, the British mathematician Lewis Fry Richardson imagined tens of thousands of meteorologists working to forecast the weather, each calculating conditions for a small part of the atmosphere but collectively piecing together a global forecast. Richardson published his work in 1922, to reviews that called the idea “of almost quixotic boldness.”

Charney paper (first weather predictions with ENIAC)

But it wasn’t until after World War II that computational power turned Richardson’s dream into reality. In the wake of the Allied victory, which relied on accurate weather forecasts for everything from planning D-Day to figuring out when and where to drop the atomic bombs, leading U.S. mathematicians acquired funding from the federal government to improve predictions. In 1950 a team led by Jule Charney, a meteorologist at the Institute for Advanced Study in Princeton, N.J., used the ENIAC, the first general-purpose, programmable electronic computer, to produce the first computer-driven regional weather forecast . The forecasting was slow and rudimentary, but it built on Richardson’s ideas of dividing the atmosphere into squares, or cells, and computing the weather for each of those. With the obscure title “Numerical integration of the barotropic vorticity equation,” the paper reporting the results set the stage for decades of climate modeling to follow.

By 1956 Norman Phillips, a member of Charney’s team, had produced the world’s first general circulation model, which captured how energy flows between the oceans, atmosphere and land. Phillips ran the calculations on a computer with just 5 kilobytes of memory, yet it was able to reproduce monthly and seasonal patterns in the lower atmosphere. That meant scientists could begin developing more realistic models of how the planet responds to factors such as increasing levels of greenhouse gases. The field of climate modeling was born.

The work was basic at first, because early computers simply didn’t have much computational power to simulate all aspects of the planetary system. “People thought that it was stupid to try to study this greenhouse-warming issue by three-dimensional model[s], because it cost so much computer time,” meteorologist Syukuro Manabe told physics historian Spencer Weart in a 1989 oral history .

Climate models have predicted how much ice the Ilulissat region of the Greenland ice sheet might lose by 2300 based on different scenarios for greenhouse gas emissions. The models are compared to 2008 (first image). In a best-case scenario, in which emissions peak by mid-century, the speed at which the glacier is sending ice out into the ocean is much lower (second image) than with a worst-case scenario, in which emissions rise at a high rate (third image).

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An important breakthrough came in 1967, when Manabe and Richard Wetherald — both at the Geophysical Fluid Dynamics Laboratory in Princeton, a lab born from Charney’s group — published a paper in the Journal of the Atmospheric Sciences that modeled connections between Earth’s surface and atmosphere and calculated how changes in carbon dioxide would affect the planet’s temperature. Manabe and Wetherald were the first to build a computer model that captured the relevant processes that drive climate , and to accurately simulate how the Earth responds to those processes. (Manabe shared the 2021 Nobel Prize in physics for his work on climate modeling; Wetherald died in 2011.)

The rise of climate modeling allowed scientists to more accurately envision the impacts of global warming. In 1979, Charney and other experts met in Woods Hole, Mass., to try to put together a scientific consensus on what increasing levels of CO 2 would mean for the planet. They analyzed climate models from Manabe and from James Hansen of NASA. The resulting “Charney report” concluded that rising CO 2 in the atmosphere would lead to additional and significant climate change. The ocean might take up much of that heat, the scientists wrote — but “it appears that the warming will eventually occur, and the associated regional climatic changes so important to the assessment of socioeconomic consequence may well be significant.”

In the decades since, climate modeling has gotten increasingly sophisticated . Scientists have drawn up a variety of scenarios for how carbon emissions might change in the future, depending on the stringency of emissions cuts. Modelers use those scenarios to project how climate and weather will change around the globe, from hotter croplands in China to melting glaciers in the Himalayas. Climate simulations have also allowed researchers to identify the fingerprints of human impacts on extreme weather that is already happening, by comparing scenarios that include the influence of human activities with those that do not.

And as climate science firmed up and the most dramatic consequences became clear, the political battles raged. — Alexandra Witze

Climate science meets politics

With the development of climate science tracing back to the early Cold War, perhaps it shouldn’t be a surprise that the science of global warming became enmeshed in broader societal and political battles. A complex stew of political, national and business interests mired society in debates about the reality of climate change, and what to do about it, decades after the science became clear that humans are fundamentally altering the planet’s atmosphere.

Climate activists

Society has pulled itself together before to deal with global environmental problems, such as the Antarctic ozone hole. In 1974 chemists Mario Molina and F. Sherwood Rowland, both of the University of California, Irvine, reported that chlorofluorocarbon chemicals, used in products such as spray cans and refrigerants, caused a chain of reactions that gnawed away at the atmosphere’s protective ozone layer . The resulting ozone hole, which forms over Antarctica every spring, allows more ultraviolet radiation from the sun to make it through Earth’s atmosphere and reach the surface, where it can cause skin cancer and eye damage.

Governments ultimately worked under the auspices of the United Nations to craft the 1987 Montreal Protocol, which strictly limited the manufacture of chlorofluorocarbons . In the years following, the ozone hole began to heal. But fighting climate change would prove to be far more challenging. Chlorofluorocarbons were a suite of chemicals with relatively limited use and for which replacements could be found without too much trouble. But the greenhouse gases that cause global warming stem from a wide variety of human activities, from energy development to deforestation. And transforming entire energy sectors to reduce or eliminate carbon emissions is much more difficult than replacing a set of industrial chemicals.

Rio Earth Summit

In 1980, though, researchers took an important step toward banding together to synthesize the scientific understanding of climate change and bring it to the attention of international policy makers. It started at a small scientific conference in Villach, Austria. There, experts met under the auspices of the World Meteorological Organization, the International Council of Scientific Unions and the United Nations Environment Program to discuss the seriousness of climate change. On the train ride home from the meeting, Swedish meteorologist Bert Bolin talked with other participants about how a broader, deeper and more international analysis was needed. In 1985, a second conference was held at Villach to highlight the urgency, and in 1988, the Intergovernmental Panel on Climate Change, the IPCC, was born. Bolin was its first chairperson.

The IPCC became a highly influential and unique body. It performs no original scientific research; instead, it synthesizes and summarizes the vast literature of climate science for policy makers to consider — primarily through massive reports issued every couple of years. The first IPCC report , in 1990, predicted that the planet’s global mean temperature would rise more quickly in the following century than at any point in the last 10,000 years, due to increasing greenhouse gases in the atmosphere. Successive IPCC reports showed more and more confidence in the link between greenhouse emissions and rising global temperatures — and explored how society might mitigate and adapt to coming changes.

IPCC reports have played a key role in providing scientific information for nations discussing how to stabilize greenhouse gas concentrations. This process started with the Rio Earth Summit in 1992 , which resulted in the U.N. Framework Convention on Climate Change. Annual U.N. meetings to tackle climate change led to the first international commitments to reduce emissions, the Kyoto Protocol of 1997. Under it, developed countries committed to reduce emissions of CO 2 and other greenhouse gases. By 2007 the IPCC declared that the reality of climate warming is “unequivocal ”; the group received the Nobel Peace Prize that year along with Al Gore for their work on climate change.

Tuvalu press conference

The IPCC process ensured that policy makers had the best science at hand when they came to the table to discuss cutting emissions. “If you go back and look at the original U.N. framework on climate change, already you see the core of the science represented there,” says Rachel Cleetus, a climate policy expert with the Union of Concerned Scientists in Cambridge, Mass. Of course, nations did not have to abide by that science — and they often didn’t.

Throughout the 2000s and 2010s, international climate meetings discussed less hard-core science and more issues of equity. Countries such as China and India pointed out that they needed energy to develop their economies, and that nations responsible for the bulk of emissions through history, such as the United States, needed to lead the way in cutting greenhouse gases. Meanwhile, residents of some of the most vulnerable nations, such as low-lying islands that are threatened by sea level rise, gained visibility and clout at international negotiating forums. “The issues around equity have always been very uniquely challenging in this collective action problem,” says Cleetus.

By 2015, the world’s nations had made some progress on the emissions cuts laid out in the Kyoto Protocol, but it was still not enough to achieve substantial global reductions. That year, a key U.N. climate conference in Paris produced an international agreement to try to limit global warming to 2 degrees C , and preferably 1.5 degrees C, above preindustrial levels.

Somalia drought and famine

Every country has its own approach to the challenge of addressing climate change. In the United States, which gets approximately 80 percent of its energy from fossil fuels, sophisticated efforts to downplay and critique the science led to major delays in climate action. For decades U.S. fossil fuel companies such as ExxonMobil worked to influence politicians to take as little action on emissions reductions as possible. Working with a small group of influential scientists, this well-funded, well-orchestrated campaign took many of its tactics from earlier tobacco-industry efforts to cast doubt on the links between smoking and cancer, as historians Naomi Oreskes and Erik Conway documented in their book Merchants of Doubt.

Perhaps the peak of U.S. climate denialism came in the late 1980s and into the 1990s — roughly a century after Swedish physical chemist Svante Arrhenius laid out the consequences of putting too much carbon dioxide into the atmosphere. In 1988 NASA scientist James Hansen testified to lawmakers about the consequences of global warming. “It is already happening now,” Hansen said, summarizing what scientists had long known.

The high-profile nature of Hansen’s testimony, combined with his NASA expertise, vaulted global warming into the public eye in the United States like never before. “It really hit home with a public who could understand that there are reasons that Venus is hot and Mars is cold,” says Joshua Howe, a historian at Reed College. “And that if you use that same reasoning, we have some concerns about what is happening here on Earth.” But Hansen also kicked off a series of bitter public battles about the reality of human-caused climate change that raged for years.        

One common approach of climate skeptics was to attack the environmental data and models that underlie climate science. In 1998, scientist Michael Mann, then at the University of Massachusetts–Amherst, and colleagues published a detailed temperature record that formed the basis of what came to be known as the “hockey stick” graph, so named because the chart showed a sharp rise in temperatures (the hockey blade) at the end of a long, much flatter period (the hockey stick). Skeptics soon demanded the data and software processing tools Mann used to create the graph. Bloggers and self-proclaimed citizen scientists created a cottage industry of questioning new climate science papers under the guise of “audits.” In 2009 hackers broke into a server at the University of East Anglia, a leading climate-research hub in Norwich, England, and released more than 1,000 e-mails between climate scientists. This “Climategate” scandal purported to reveal misconduct on the part of the researchers, but several reviews largely exonerated the scientists.  

The graph that launched climate skeptic attacks

This famous graph, produced by scientist Michael Mann and colleagues, and then reproduced in a 2001 report by the Intergovernmental Panel on Climate Change, dramatically captures temperature change over time. Climate change skeptics made it the center of an all-out attack on climate science.

image of the "hockey stick" graph showing the increase in temperature from 1961 to 1990

Such tactics undoubtedly succeeded in feeding politicians’ delay on climate action in the United States, most of it from Republicans. President George W. Bush withdrew the country from the Kyoto Protocol in 2001 ; Donald Trump similarly rejected the Paris accord in 2017 . As late as 2015, the chair of the Senate’s environment committee, James Inhofe of Oklahoma, brought a snowball into Congress on a cold winter’s day in order to continue his argument that human-caused global warming is a “hoax.” In Australia, a similar mix of right-wing denialism and fossil fuel interests has kept climate change commitments in flux, as prime ministers are voted in and out over fierce debates about how the nation should act on climate.

Yet other nations have moved forward. Some European countries such as Germany aggressively pursued renewable energies, such as wind and solar, while activists such as the Swedish teenager Greta Thunberg — the vanguard of a youth-action movement — pressured their governments for more.

In recent years the developing economies of China and India have taken center stage in discussions about climate action. Both nations argue that they must be allowed extra time to wean themselves off fossil fuels in order to continue economic growth. They note that historically speaking, the United States is the largest total emitter of carbon by far.

Total carbon dioxide emissions by country, 1850–2021

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These 20 nations have emitted the largest cumulative amounts of carbon dioxide since 1850. Emissions are shown in in billions of metric tons and are broken down into subtotals from fossil fuel use and cement manufacturing (blue) as well as from land use and forestry (green).

China, whose annual CO 2 emissions surpassed those of the United States in 2006, declared several moderate steps in 2021 to reduce emissions, including that it would stop building coal-burning power plants overseas. India announced it would aim for net-zero emissions by 2070, the first time it has set a date for this goal.

Yet such pledges continue to be criticized. At the 2021 U.N. Climate Change Conference in Glasgow, Scotland, India was globally criticized for not committing to a complete phaseout of coal — although the two top emitters, China and the United States, have not themselves committed to phasing out coal. “There is no equity in this,” says Aayushi Awasthy, an energy economist at the University of East Anglia. — Alexandra Witze

Facing a warmer future

Climate change creeps up gradually on society, except when it doesn’t. The slow increase in sea level, for instance, causes waters to lap incrementally higher at shorelines year after year. But when a big storm comes along — which may be happening more frequently due to climate change — the consequences become much more obvious. Storm surge rapidly swamps communities and wreaks disproportionate havoc. That’s why New York City installed floodgates in its subway and tunnel system in the wake of 2012’s Superstorm Sandy , and why the Pacific island nation of Tuvalu has asked Australia and New Zealand to be prepared to take in refugees fleeing from rising sea levels.

NYC floodgates

The list of climate impacts goes on and on — and in many cases, changes are coming faster than scientists had envisioned a few decades ago. The oceans are becoming more acidic as they absorb carbon dioxide, harming tiny marine organisms that build protective calcium carbonate shells and are the base of the marine food web. Warmer waters are bleaching coral reefs. Higher temperatures are driving animal and plant species into areas in which they previously did not live, increasing the risk of extinction for many. “It’s no longer about impacts in the future,” says Rachel Cleetus, a climate policy expert at the Union of Concerned Scientists. “It’s about what’s happening in the U.S. here and now, and around the world.”

No place on the planet is unaffected. In many areas, higher temperatures have led to major droughts, which dry out vegetation and provide additional fuel for wildfires such as those that have devastated Australia , the Mediterranean and western North America in recent years. The Colorado River , the source of water for tens of millions of people in the western United States , came under a water-shortage alert in 2021 for the first time in history.

Then there’s the Arctic, where temperatures are rising at more than twice the global average and communities are at the forefront of change. Permafrost is thawing, destabilizing buildings, pipelines and roads. Caribou and reindeer herders worry about the increased risk of parasites to the health of their animals. With less sea ice available to buffer the coast from storm erosion, the Inupiat village of Shishmaref, Alaska, risks crumbling into the sea. It will need to move from its sand-barrier island to the mainland .

“We know these changes are happening and that the Titanic is sinking,” says Louise Farquharson, a geomorphologist at the University of Alaska in Fairbanks who monitors permafrost and coastal change around Alaska. Like many Arctic scientists, she is working with Indigenous communities to understand the shifts they’re experiencing and what can be done when buildings start to slump and water supplies start to drain away. “A big part is just listening to community members and understanding what they’re seeing change,” she says.

Alaska home destroyed

All around the planet, those who depend on intact ecosystems for their survival face the greatest threat from climate change. And those with the least resources to adapt to climate change are the ones who feel it first .

“We are going to warm,” says Claudia Tebaldi, a climate scientist at Lawrence Berkeley National Laboratory in California. “There is no question about it. The only thing that we can hope to do is to warm a little more slowly.”

That’s one reason why the IPCC report released in 2021 focuses on anticipated levels of global warming. There is a big difference between the planet warming 1.5 degrees versus 2 degrees or 2.5 degrees. Consider that we are now at least 1.1 degrees above preindustrial levels of CO 2 and are already seeing dramatic shifts in climate. Given that, keeping further global temperature increases as low as possible will make a big difference in the climate impacts the planet faces. “With every fraction of a degree of warming, everything gets a little more intense,” says paleoclimatologist Jessica Tierney. “There’s no more time to beat around the bush.”

Historical and projected global temperature change

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Various scenarios for how greenhouse gas emissions might change going forward help scientists predict future climate change. This graph shows the simulated historical temperature trend along with future projections of global surface temperature based on five scenarios from the Intergovernmental Panel on Climate Change. Temperature change is the difference from the 1850–1900 average.

The future rests on how much nations are willing to commit to cutting emissions and whether they will stick to those commitments. It’s a geopolitical balancing act the likes of which the world has never seen.

Science can and must play a role going forward. Improved climate models will illuminate what changes are expected at the regional scale, helping officials prepare. Governments and industry have crucial parts to play as well. They can invest in technologies, such as carbon sequestration, to help decarbonize the economy and shift society toward more renewable sources of energy. “We can solve these problems — most of the tools are already there,” says Cascade Tuholske, a geographer at Columbia University. “We just have to do it.”

Huge questions remain. Do voters have the will to demand significant energy transitions from their governments? How can business and military leaders play a bigger role in driving climate action? What should be the role of low-carbon energy sources that come with downsides, such as nuclear energy ? How can developing nations achieve a better standard of living for their people while not becoming big greenhouse gas emitters? How can we keep the most vulnerable from being disproportionately harmed during extreme events, and incorporate environmental and social justice into our future?

These questions become more pressing each year, as CO 2 accumulates in our atmosphere. The planet is now at higher levels of CO 2 than at any time in the last 3 million years. Yet Ralph Keeling, keeper of the iconic Mauna Loa record tracking the rise in atmospheric CO 2 , is already optimistically thinking about how scientists would be able to detect a slowdown, should the world actually start cutting emissions by a few percent per year. “That’s what the policy makers want to see — that there’s been some large-scale impact of what they did,” he says.

West Bengal floods

At the 2021 U.N. climate meeting in Glasgow diplomats from around the world agreed to work more urgently to shift away from using fossil fuels. They did not, however, adopt targets strict enough to keep the world below a warming of 1.5 degrees Celsius. It’s been well over a century since Svante Arrhenius recognized the consequences of putting extra carbon dioxide into the atmosphere, and yet world leaders have yet to pull together to avoid the most dangerous consequences of climate change.

Time is running out. — Alexandra Witze

Climate change facts

We know that climate change and its consequences are real, and we are responsible. Here’s what the science tells us.

How much has the planet warmed over the past century?

The planet’s average surface temperature has risen by at least 1.1 degree Celsius since preindustrial levels of 1850–1900.

What is causing climate change?

People are loading the atmosphere with carbon dioxide and other heat-trapping gases produced during the burning of fossil fuels, such as coal and gas, and cutting down forests.

What are some of the effects of climate change?

Ice sheets in Greenland and Antarctica are melting, raising sea levels and flooding low-lying island nations and coastal cities. Drought is parching farmlands and the rivers that feed them. Wildfires are raging. Rains are becoming more intense, and weather patterns are shifting.

What is the greenhouse effect?

In the 19th century, Irish physicist John Tyndall found that carbon dioxide gas, as well as water vapor, absorbed more heat than air alone. He argued that such gases would trap heat in Earth’s atmosphere, much as panes of glass trap heat in a greenhouse, and thus modulate climate.

What is the Keeling curve?

line graph showing increasing monthly average CO2 concentrations at Mauna Loa Observatory from 1958 to 2022

One of the most iconic datasets in all of science, the Keeling curve tracks the rise of atmospheric CO 2 . When geochemist Charles David Keeling began his measurements in 1958 on the Hawaiian volcano of Mauna Loa, CO 2 made up 315 parts per million of the global atmosphere. Each year the curve keeps going up: In 2016 it passed 400 ppm of CO 2 in the atmosphere, as measured during its typical annual minimum in September. In 2021, the annual minimum was 413 ppm.

Does it get hotter every year?

Average global temperatures fluctuate from year to year, but temperature observations taken at weather stations around the world confirm that we are living in the hottest years on record. The 10 warmest years since record keeping began in 1880 have all occurred since 2005. And nine of those 10 have come since 2010.

What countries emit the most carbon dioxide?

The United States has been the largest total emitter of carbon dioxide by far, followed by China and Russia. China’s annual CO 2 emissions surpassed those of the United States in 2006.

What places are impacted by climate change?

No place on the planet is unaffected. Higher temperatures have led to major droughts, providing fuel for wildfires such as those that have devastated Australia , the Mediterranean and western North America in recent years. The Colorado River came under a water-shortage alert in 2021 for the first time in history. In the Arctic, where temperatures are rising at more than twice the global average, permafrost is thawing, destabilizing buildings, pipelines and roads. With less sea ice available to buffer the coast from storm erosion, the Inupiat village of Shishmaref, Alaska, risks crumbling into the sea. All around the planet, those who depend on intact ecosystems for their survival face the greatest threat from climate change. And those with the least resources to adapt to climate change are the ones who feel it first .

Editor’s note: This story was published March 10, 2022.

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British mathematician Lewis Fry Richardson (shown at center) proposes forecasting the weather by piecing together the calculations of tens of thousands of meteorologists working on small parts of the atmosphere.

Keeling portrait

Geochemist Charles David Keeling (shown in 1988) begins tracking the rise in atmospheric carbon dioxide at Mauna Loa in Hawaii. The record, which continues through today, has become one of the most iconic datasets in all of science.

Carson

Rachel Carson (shown) publishes the book Silent Spring , raising alarm over the ecological impacts of the pesticide DDT. The book helps catalyze the modern U.S. environmental movement.

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The first Earth Day, organized by U.S. senator Gaylord Nelson and graduate student Denis Hayes, is celebrated.

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The first Landsat satellite launched (shown), opening the door to continuous monitoring of Earth and its features from above.

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A powerful eruption from the Philippines’ Mount Pinatubo (shown) ejects millions of tons of sulfur dioxide into the stratosphere, temporarily cooling the planet.  

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World leaders gathered (shown) at the United Nations Conference on Environment and Development in Rio de Janeiro to address how to pursue economic development while also protecting the Earth. The meeting resulted in an international convention on climate change.

Youth activists at COP26

Activist Greta Thunberg initiates the “School Strike for Climate” movement by protesting outside the Swedish parliament. Soon, students around the world join a growing movement demanding action on climate change . (Activists at the 2021 U.N. Climate Change Conference are shown.)

From the archive

Climate change foreseen.

In an early mention of climate change in Science News-Letter , the predecessor of Science News , British meteorologist C.E.P. Brooks warns that present warming trends could lead to “important economic and political effects.”

IGY Brings Many Discoveries

Science News Letter lists the Top 8 accomplishments of the International Geophysical Year.

Chilling possibilities

Science News explores the tentative idea that global temperatures are cooling and that a new ice age could be imminent, which is later shown to be inaccurate.

Long Hot Future: Warmer Earth Appears Inevitable

“The planet earth will be a warmer place in the 21st century, and there is no realistic strategy that can prevent the change,” Science News reports.

Ozone and Global Warming: What to Do?

Policy makers discuss how to solve the dual problems of ozone depletion and global warming.

Looking for Mr. Greenhouse

Science writer Richard Monastersky reports on scientists’ efforts to evaluate how to connect increasing greenhouse gases and a warming climate.

World Climate Panel Charts Path for Action

The Intergovernmental Panel on Climate Change reports that “the fingerprint of man in the past temperature record” is now apparent.

Animals on the Move

A warming climate means shifting ranges and ecosystem disruptions for a lot of species, Nancy Ross-Flanigan reports.

Changing climate: 10 years after ‘An Inconvenient Truth’

A decade after former vice president Al Gore releases the documentary film An Inconvenient Truth , Science News looks back at how climate science has advanced.

With nowhere to hide from rising seas, Boston prepares for a wetter future

Mary Caperton Morton reports for Science News on how Boston is taking action to prepare for rising seas.

The new UN climate change report shows there’s no time for denial or delay

Earth & climate writer Carolyn Gramling covers the sixth assessment report from the Intergovernmental Panel on Climate Change, which documents how climate change is already affecting every region on Earth.

Climate change disinformation is evolving. So are efforts to fight back

Researchers are testing games and other ways to help people recognize climate change denial.

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Extreme weather in 2022 showed the global impact of climate change

Heat waves, floods, wildfires and drought around the world were exacerbated by Earth’s changing climate.

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Yale Climate Connections

Yale Climate Connections

Scientists agree: Climate change is real and caused by people

Sam Harrington

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The scientific consensus that climate change is happening and that it is human-caused is strong. Scientific investigation of global warming began in the 19th century , and by the early 2000s, this research began to coalesce into confidence about the reality, causes, and general range of adverse effects of global warming. This conclusion was drawn from studying air and ocean temperatures, the atmosphere’s composition, satellite records, ice cores, modeling, and more.

In 1988 the United Nations and World Meteorological Organization founded the Intergovernmental Panel on Climate Change, IPCC, to provide regular updates on the scientific evidence on global warming. In a 2013 report , the IPCC concluded that scientific evidence of warming is “unequivocal” and that the largest cause is an increase of carbon dioxide in the atmosphere as a result of humans burning fossil fuels. The IPCC continues to assess this science, periodically issuing new reports.

Climate change is real and caused by humans

The IPCC is not the only scientific group that has reached a clear consensus on the scientific evidence of human-caused global warming. As this NASA page points out, 200 global scientific organizations, 11 international science academies, and 18 American science associations have released statements in alignment with this consensus.

Graphic showing how atmospheric CO2 has increased since Industrial Revolution

Amanda Staudt is the senior director for climate, atmospheric and polar sciences at the National Academies of Science, Engineering and Medicine, where she has worked since 2001. The Academies, she said, first began studying climate change in 1979, researching how much warming would likely happen if the amount of carbon dioxide concentrations in the atmosphere were doubled.

Four decades later, those findings have held up and have been strengthened based on scores of continued studies and analysis. “The remarkable thing about that study,” she said, “is that they basically got the right answer” from the start. This 1979 study by the National Research Council, Staudt said, led to investment in climate science in the U.S. 

Temperature data graphic

Though this consensus has been thoroughly established, scientific research and new findings continue. Staudt said countless attempted rebuttals of climate science findings have been researched and disproved.

“We did a lot of studies in that time period, looking at those questions,” she said, ”and one by one, putting them to bed and convincing ourselves over and over again, that humans were affecting climate, and that we could document that effect.”

At the National Academies, reaching consensus requires open sessions and dialogue with scientists and agreement from committees, which typically consist of 12-15 experts. Their draft reports go through peer review, and reviewers’ concerns are resolved before publication is approved. The goal is for the complex science of climate change to become as thoroughly researched and substantiated as possible.

“One of the things I think about scientists is that we’re all inherently skeptics at some level,” Staudt said. “That’s what drives us to science, that we have questions about the world around us. And we want to prove that for ourselves.”

Scientists consistently reaffirm evidence that climate change is happening

Climate scientists worldwide go through similar processes before their findings are published. And their research papers, too, show a strong consensus about global warming. As NASA states on its website , “Multiple studies published in peer-reviewed scientific journals show that 97 percent or more of actively publishing climate scientists agree: Climate-warming trends over the past century are extremely likely due to human activities.” (By sound practice, scientists resist saying science is for all times “certain” or that its findings are “final,” and the “extremely likely” language respects that practice.)

One of the studies about the consensus was led by John Cook, a fellow at the Climate Change Communication Research Hub at Monash University in Melbourne, Australia. Cook and colleagues reviewed nearly 12,000 scientific papers to examine how aligned published research is on major findings on climate change. That study found that 97 percent of scholarly papers that take a position on climate change do endorse the consensus. The papers that rejected the consensus position contained errors, according to subsequent research .

In reviewing the papers, Cook has said he and his colleagues found the consensus to have been so widely accepted by 2013 that many researchers by then no longer felt a need to mention or reaffirm it in their research papers.

articles to read about climate change

Also see: Causes of global warming: How scientists know that humans are responsible

Samantha Harrington

Samantha Harrington, director of audience experience for Yale Climate Connections, is a journalist and graphic designer with a background in digital media and entrepreneurship. Sam is especially interested... More by Samantha Harrington

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New to Climate Change?

What we know about climate change.

The Earth’s climate is changing faster today than ever before in the history of our species – and human actions are the main reason why.

The Science

In the late 1700s, humans started burning large amounts of fossil fuels—first coal, and later, oil and natural gas—for heat, to power machines, and to generate electricity. These fuels helped us make significant technological, social, and economic progress and elevated standards of living around the world. As we’ve burned more and more fossil fuels over two centuries, we have added large amounts of carbon dioxide (CO 2 ) and other heat-trapping greenhouse gases to our atmosphere.

Greenhouse gases prevent some heat from escaping the Earth out into space, and while this is a natural phenomenon, human behavior has now added so much greenhouse gas that our atmosphere is keeping in too much heat . In fact, ice core data shows us that there is now more CO 2 in our atmosphere than at any point in at least the past 800,000 years . Because of this, our planet is almost 1.8°F hotter than it was in the 1880s.

As the levels of CO 2 continue to rise, the planet is still getting hotter—and because CO 2 stays in the atmosphere for such a long time, some of the CO 2 we emit now will still be trapping extra heat on Earth for many hundreds of years.

This is especially worrisome because many parts of the world are still industrializing, and the global need for energy is growing.

For these facts, the evidence is overwhelming.

If this warming goes on unchecked, we leave ourselves open to severe risks. Scientists predict that it is highly likely that the rainfall patterns we all need for clean, fresh water will change, drying up in some places while causing floods in others. There is also significant evidence that, as a result of climate change, wildfires will worsen, destroying lives and property; that sea levels will rise, flooding many large cities ; that hurricanes will become stronger; that the oceans will grow more acidic and hold less oxygen, threatening sea life and the people who rely on it for food; and that many people around the world would need to move to escape floods, famines or droughts, particularly in the poorest countries with the least capacity to adapt to a changing climate.

In communities across the United States and around the world, people are already experiencing the early effects of this climate change.

It Is Not Too Late

Because of the amount of CO 2 we have already added to the atmosphere, some warming has already occurred and some further warming is now unavoidable. In fact, even if we stopped all greenhouse gas emissions today, the planet will maintain this extra warmth for some time, given how long these gases stay in our atmosphere and given the extra heat that has been taken up by the oceans .

But if we act swiftly, it is not too late to prevent much more severe changes to the Earth’s climate.

MIT and many of the world’s leading companies, organizations, and institutions are making a tremendous effort to meet this challenge, and there are options for what can be done. We can, as a species, learn to better adapt to the unavoidable effects of the warming that human behavior has already caused. And we can make choices that will stop adding CO 2 to our atmosphere, and work on ways to remove some of what we’ve already emitted.

With a worldwide effort to control our CO 2 emissions, we, our children, and our planet can avoid the threats that await us on a hotter Earth.

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Play around with our Webby Award-winning overview of the science and risks of climate change. Just the facts.

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Expert-written overviews of climate change science, solutions, and related topics.

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Earth's Changing Climate

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

Earth Science, Geography, Human Geography, Physical Geography

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Climate  is the long-term pattern of weather in a particular area. Weather can change from hour to hour, day to day, month to month or even from year to year. For periods of 30 years or more, however, distinct  weather patterns occur. A  desert  might experience a rainy week, but over the long term, the region receives very little rainfall . It has a dry climate .

Because climates are mostly constant, living things can  adapt  to them. Polar bears have adapted to stay warm in  polar climates , while cacti have evolved to hold onto water in  dry climates . The  enormous  variety of life on Earth results in large part from the variety of climates that exist.

Climates do change, however—they just change very slowly, over hundreds or even thousands of years. As climates change, organisms that live in the area must adapt ,  relocate , or risk going  extinct .

Earth’s Changing Climate Earth’s climate has changed many times. For example,  fossils from the Cretaceous period (144 to 65 million years ago) show that Earth was much warmer than it is today.  Fossilized plants and animals that normally live in warm  environments have been found at much higher  latitudes than they could survive at today. For instance,  breadfruit  trees ( Artocarpus altilis ), now found on  tropical   islands , grew as far north as Greenland.

Earth has also experienced several major  ice ages —at least four in the past 500,000 years. During these periods, Earth’s  temperature   decreased , causing an  expansion  of  ice sheets and  glaciers . The most recent Ice Age began about two million years ago and peaked about 20,000 years ago. The ice caps began retreating 18,000 years ago. They have not disappeared completely, however. Their presence in Antarctica and Greenland suggests Earth is still in a sort of ice age. Many scientists believe we are in an  interglacial period , when warmer temperatures have caused the ice caps to  recede . Many centuries from now, the glaciers may advance again. Climatologists look for evidence of past climate change in many different places. Like clumsy criminals, glaciers leave many clues behind them. They scratch and  scour   rocks as they move. They deposit sediment  known as glacial till. This sediment sometimes forms mounds or ridges called  moraines . Glaciers also form elongated oval hills known as  drumlins . All of these geographic features on land that currently has no glaciers suggest that glaciers were once there. Scientists also have chemical evidence of ice ages from sediments and  sedimentary rocks . Some rocks only form from glacial material. Their presence under the ocean or on land also tells scientists that glaciers were once present in these areas. Scientists also have paleontological evidence—fossils. Fossils show what kinds of animals and plants lived in certain areas. During ice ages, organisms that are adapted to cold weather can increase their range , moving closer to the  Equator . Organisms that are adapted to warm weather may lose part of their  habitat , or even go extinct.

Climate changes occur over shorter periods, as well. For example, the so-called  Little Ice Age  lasted only a few hundred years, peaking during the 16th and 17th centuries. During this time, average global temperatures were 1 to 1.5 degrees Celsius (2 to 3 degrees Fahrenheit) cooler than they are today.

A change of one or two degrees might not seem like a lot, but it was enough to cause some pretty massive effects. For instance, glaciers grew larger and sometimes engulfed whole mountain villages. Winters were longer than usual, limiting the growing seasons of  crops . In northern Europe, people deserted farms and villages to avoid  starvation .

One way scientists have learned about the Little Ice Age is by studying the rings of trees that are more than 300 years old. The thickness of  tree rings is related to the amount of the trees’ annual growth. This in turn is related to climate changes. During times of  drought  or cold, trees could not grow as much. The rings would be closer together.

Some climate changes are almost predictable . One example of regular climate change results from the warming of the surface waters of the tropical eastern Pacific Ocean. This warming is called El Niño —The Child—because it tends to begin around Christmas. In normal years,  trade winds blow steadily across the ocean from east to west, dragging warm surface water along in the same direction. This produces a shallow layer of warm water in the eastern Pacific and a buildup of warm water in the west. Every few years, normal winds falter and ocean currents reverse. This is El Niño. Warm water deepens in the eastern Pacific. This, in turn, produces  dramatic  climate changes. Rain decreases in Australia and southern Asia, and freak storms may pound Pacific islands and the west coast of the Americas. Within a year or two, El Niño ends, and climate systems return to normal.

Natural Causes of Climate Change Climate changes happen for a variety of reasons. Some of these reasons have to do with Earth’s  atmosphere . The climate change brought by El Niño, which relies on winds and ocean currents, is an example of natural atmospheric changes. Natural climate change can also be affected by forces outside Earth’s atmosphere. For instance, the 100,000-year cycles of ice ages are probably related to changes in the tilt of Earth’s  axis  and the shape of its  orbit  around the sun. Those planetary factors change slowly over time and affect how much of the sun’s energy reaches different parts of the world in different seasons.

The impact of large  meteorites on Earth could also cause climate change . The impact of a meteor would send millions of tons of  debris  into the atmosphere . This debris would block at least some of the sun’s rays, making it cold and dark. This climate change would severely limit what organisms could survive. Many  paleontologists believe the impact of a meteor or comet contributed to the extinction of the dinosaurs .  Dinosaurs simply could not survive in a cool, dark climate . Their bodies could not adjust to the cold, and the dark limited the growth of plants on which they fed.

Plate tectonics  also play a role in climate changes. Earth’s continental plates have moved a great deal over time. More than 200 million years ago, the continents were  merged together as one giant landmass called  Pangaea . As the continents broke apart and moved, their positions on Earth changed, and so did the movements of ocean currents. Both of these changes had effects on climate. Changes in  greenhouse gases in the atmosphere also have an impact on climate change. Gases like  carbon dioxide  trap the sun’s heat in Earth’s atmosphere, causing temperatures on the surface to rise.  Volcanoes —both on land and under the ocean—release greenhouse gases, so if the eruption only reaches the troposphere the additional gases contribute to warming. However, if the eruption is powerful enough to reach the stratosphere particles reflect sunlight back into space causing periods of cooling regionally.

Human Causes of Climate Change Some human activities release greenhouse gases—burning  fossil fuels for  transportation  and  electricity , or using  technology  that increases meat production, for instance. Trees absorb carbon dioxide, so cutting down forests for  timber  or  development  contributes to the greenhouse effect . So do factories that  emit   pollutants into the atmosphere.

Many scientists are worried that these activities are causing dramatic and dangerous changes in Earth’s climate. Average temperatures around the world have risen since about 1880, when scientists began tracking them. The seven warmest years of the 20th century occurred in the 1990s. This warming trend may be a sign that the greenhouse effect is increasing because of human activity. This climate change is often referred to as “ global warming .” Global warming is often linked to the burning of fossil fuels— coal ,  oil , and  natural gas —by industries and cars. Warming is also linked to the destruction of tropical forests. The University of California Riverside and NASA estimate human activity has increased the amount of carbon dioxide in the atmosphere by about 30 percent in the past 150 years. The amount of methane , a potent greehouse gas produced by decomposing plant and animal matter, is also increasing. Increased amounts of methane in Earth’s atmosphere are usually linked to  agricultural development  and industrial technology. As economies grow, populations consume more goods and throw away more materials. Large landfills , filled with decomposing waste, release tons of methane into the atmosphere. Chlorofluorocarbon (CFC) ,  hydrochlorofluorocarbon  (HCFC), and  hydrofluorocarbon  (HFC) chemicals are used in refrigeration and aerosol sprays. These chemicals are also greenhouse gases. Many countries are working to  phase out  their use, and some have laws to prevent companies from manufacturing them.

Global Warming

As the proportion of greenhouse gases in the atmosphere rises, so does the temperature of Earth. Climatologists worry that the global temperature will increase so much that ice caps will begin melting within the next several decades . This would cause the  sea level  to rise. Coastal areas, including many low-lying islands, would be flooded. Severe climate change may bring more severe weather patterns—more  hurricanes ,  typhoons , and  tornadoes . More precipitation would fall in some places and far less in others. Regions where crops now grow could become deserts. As climates change, so do the habitats for living things. Animals that live in an area may become threatened. Many human societies depend on specific crops for food , clothing, and trade . If the climate of an area changes, the people who live there may no longer be able to grow the crops they depend on for survival. Some scientists worry that as Earth warms,  tropical diseases such as  malaria ,  West Nile virus , and  yellow fever  will expand into more  temperate  regions. The temperature will continue to rise unless preventive steps are taken. Most climatologists agree that we must reduce the amount of greenhouse gases released into the atmosphere. There are many ways to do this, including:

  • Drive less. Use  public transportation ,  carpool , walk, or ride a bike.
  • Fly less. Airplanes produce huge amounts of greenhouse gas emissions .
  • Reduce, reuse, and recycle.
  • Plant a tree. Trees absorb carbon dioxide, keeping it out of the atmosphere.
  • Use less electricity.
  • Eat less meat. Cows are one of the biggest methane producers.
  • Support alternative energy sources that don’t burn fossil fuels, such as  solar power  and  wind energy .

The climate has changed many times during Earth’s history, but the changes have occurred slowly, over thousands of years. Only since the Industrial Revolution have human activities begun to influence climate—and scientists are still working to understand what the  consequences might be.

Cool Warming Could the current phase of climate change cause another Little Ice Age? As strange as it sounds, some scientists believe it could. If melting glaciers release large amounts of freshwater into the oceans, this could disrupt the ocean conveyor belt, an important circulation system that moves seawater around the globe. Stopping this cycle could possibly cause cooling of 3 to 5 degrees Celsius (5-9 degrees Fahrenheit) in the ocean and atmosphere.

Early Squirrels The North American red squirrel has started breeding earlier in the year as a result of climate change. Food becomes available to the squirrels earlier because of warmer winters.

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Nearly 15% of Americans deny climate change is real, AI study finds

  • Jim Erickson

Public figures such as Trump play outsized role in influencing beliefs

Climate change denial and belief relative to political affiliation. Image credit: Gounaridis and Newell in Scientific Reports, February 2024

Using social media data and artificial intelligence in a comprehensive national assessment, a new University of Michigan study reveals that nearly 15% of Americans deny that climate change is real.

Scientists have long warned that a warming climate will cause communities around the globe to face increasing risks due to unprecedented levels of flooding, wildfires, heat stress, sea-level rise and more. Though the science is sound—even showing that human-induced, climate-related natural disasters are growing in frequency and intensity sooner than originally anticipated—climate change is still not wholly accepted as true in the United States.

The researchers used Twitter (now X) data from 2017 to 2019 and AI techniques to understand how social media has spread climate change denialism, analyzing the data to estimate climate change belief and denial rates.

The study, published online Feb. 14 in the journal Scientific Reports, also identified key influencers, such as former President Donald Trump, and how they spread and cement misinformation about climate change by leveraging world and weather events.

Joshua Newell

“Prior to the advancement of AI and social media data, this work relied on expensive and time-consuming surveys,” said study senior author Joshua Newell , professor and co-director of the Center for Sustainable Systems at U-M’s School for Environment and Sustainability.

Using ChatGPT’s Large Language Model, the researchers classified more than 7.4 million geocoded tweets as ‘for’ or ‘against’ climate change and mapped the results at state and county levels. They then used statistical models to determine the typical profile of someone who does not believe in climate change and performed network analysis to identify the structure of the social media network for both climate change belief and denial.

The study found that 14.8% of Americans deny that climate change is real, which is consistent with previous national studies, and also identified the demographic and geographic groups where denialism persists.

Analysis of the geocoded tweets revealed that belief in climate change is highest along the West Coast and East Coast, and that denialism is highest in the central and southern parts of the country, with more than 20% of the populations of Oklahoma, Mississippi, Alabama and North Dakota consisting of people who do not believe in climate change.

Climate change denialism in the U.S., by state (A) and county (B). (Note: Uncertainty is higher in counties with low population densities due to smaller tweet sample sizes.) Image credit: Gounaridis and Newell in Scientific Reports, February 2024

The researchers also revealed that belief in climate change can vary substantially within states. For example, in California, where less than 12% of the population does not believe in climate change, northern California’s Shasta County had climate change denial rates as high as 52%.

Similarly, the average percentage of deniers in Texas is 21%, but at the county level, this ranges from 13% in Travis County to 67% in Hockley County.

The findings show that political affiliation plays the most influential role in determining whether a person believes in climate change or not, with a high percentage of Republican voters having the strongest correlation with climate change deniers.

In addition, the researchers saw a strong connection between climate denialism and low COVID-19 vaccination rates, suggesting a broad skepticism of science. Other variables that they found to influence climate change opinion include level of education, income and the degree to which the regional economy is reliant on fossil fuels to produce energy.

Dimitrios Gounaridis

“What this indicates is that communities with a high prevalence of climate change deniers are at risk of discounting other science-based health or safety recommendations,” said study lead author Dimitrios Gounaridis , a research fellow at U-M’s Center for Sustainable Systems.

The study is also the first to identify which individuals on X are influential in shaping belief or denial of climate change and to what extent. In addition, it maps out how denialists and climate change believers have formed mostly separate X communities, creating echo chambers that do not interact with each other.

The findings show Trump as having the biggest influence, as well as three influential groups that heavily retweeted him—The Daily Wire, Breitbart and Climate Depot—in addition to conservative political commentators such as Ben Shapiro.

Network of top Twitter (now X) influencers of climate change opinion. Image credit: Gounaridis and Newell in Scientific Reports, February 2024

“During the 2017-2019 study period, the most heavily retweeted post includes one by Trump that questions climate change due to unusually cold weather in the U.S., and another where he casts doubt on a U.N. climate report,” Newell said. “In almost half of the tweets analyzed, the most common refrain was that ‘climate change was not real.'”

Other frequent explanations were that humans are not the primary cause and that climate change experts are unreliable.

Newell said that, although there’s a broad awareness of the fact that social media users like Trump can be influential, it was striking just how influential a role some individuals play in shaping and cementing public opinion on crucial issues such as climate change.

“What is scary, and somewhat disheartening, is how divided the worlds are between climate change belief and denial,” he said. “The respective X echo chambers have little communication and interaction between them.”

Newell notes that the study did not analyze newer social media outlets, such as Truth Social, a primary channel for Trump’s recent social media posts.

“Influencers like Trump are creating their own echo chambers outside of X, which in many ways is even more concerning,” he said. “People tend to selectively credit or discredit evidence based on their beliefs, which is how fake experts come to serve as credible messengers.

“This is the basis of the theory of identity-protective cognition, which helps explain, for example, why Republican voters are more likely to believe tweets from Trump on climate change rather than other, more reliable sources—it is identity-affirming.”

With election season in full swing, the study’s authors suggest that social media companies should flag misinformation when it appears on their platforms and consider banning users who persistently spread falsehoods.

“The information revealed in this study provides a basis for developing strategies to counter this knowledge vulnerability and reduce the spread of mis- or disinformation by identifying the communities most at risk of not adopting measures to increase resilience to the effects of climate change,” Newell said. “We learned that a relatively small number of individuals are highly influential in spreading misinformation about climate change.

“Social media companies have banned users for this type of behavior in the past, and for other topics, such as when then-Twitter banned Trump because of tweets maintaining election fraud and supporting the U.S. Capitol attack on Jan. 6 (his account has since been restored). For the safety of others, these companies should consider developing similar policies to limit the spread of climate change misinformation.”

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9 ways AI is helping tackle climate change

Artificial intelligence can help to tackle climate change.

Artificial intelligence can help to tackle climate change. Image:  Unsplash/anniespratt

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Stay up to date:, artificial intelligence.

This article was originally published in January 2024 and updated in February 2024.

  • The use of artificial intelligence (AI) can contribute to the fight against climate change.
  • Existing AI systems include tools that predict weather, track icebergs and identify pollution.
  • AI can also be used to improve agriculture and reduce its environmental impact, the World Economic Forum says.

The power of artificial intelligence (AI) to process huge amounts of data and help humans make decisions is transforming industries.

As one of the world’s toughest challenges, combating climate change is another area where AI has transformational potential.

Almost 4 billion people already live in areas highly vulnerable to climate change , according to the World Health Organization.

And this is expected to lead to around 250,000 extra deaths a year between 2030 and 2050, from undernutrition, malaria, diarrhoea and heat stress alone.

Here are nine ways AI is already helping to tackle climate change.

1. Icebergs are melting – AI knows where and how fast

AI has been trained to measure changes in icebergs 10,000 times faster than a human could do it.

This will help scientists understand how much meltwater icebergs release into the ocean – a process accelerating as climate change warms the atmosphere .

Scientists at the University of Leeds in the United Kingdom say their AI can map large Antarctic icebergs in satellite images in just one-hundredth of a second, reports the European Space Agency.

For humans, this task is lengthy and time-consuming, and it’s hard to identify icebergs amid the white of clouds and sea ice.

2. Mapping deforestation with AI

AI, satellite images and ecology expertise are also being used to map the impact of deforestation on the climate crisis.

Space Intelligence , a company based in Edinburgh, Scotland, says it is working in more than 30 countries and has mapped more than 1 million hectares of land from space using satellite data.

The company’s technology remotely measures metrics, such as deforestation rates and how much carbon is stored in a forest.

3. AI is helping communities facing climate risks in Africa

In Africa, AI is being used in a United Nations project to help communities vulnerable to climate change in Burundi, Chad and Sudan.

The IKI Project uses AI technology to help predict weather patterns, so communities and authorities can better plan how to adapt to climate change and mitigate its impact.

This includes improving access to clean energy, implementing proper waste management systems and encouraging reforestation.

4. Using AI to recycle more waste

Another AI system is helping to tackle climate change by making waste management more efficient.

Waste is a big producer of methane and is responsible for 16% of global greenhouse gas (GHG) emissions, according to the United States Environmental Protection Agency.

Greyparrot , a software startup based in London, United Kingdom, has developed an AI system that analyzes waste processing and recycling facilities to help them recover and recycle more waste material.

The company tracked 32 billion waste items across 67 waste categories in 2022, and says it identifies 86 tonnes of material on average that could be recovered but is being sent to landfill.

AI is helping to fight climate change in systems, including those that identify plastic pollution in the ocean.

5. AI is cleaning up the ocean

In the Netherlands, an environmental organization called The Ocean Cleanup is using AI and other technologies to help clear plastic pollution from the ocean.

AI that detects objects is helping the organization create detailed maps of ocean litter in remote locations. The ocean waste can then be gathered and removed , which is more efficient than previous cleanup methods using trawlers and aeroplanes.

Plastic pollution contributes to climate change by emitting GHGs and harming nature.

6. AI helps predict climate disasters

In São Paulo, Brazil, a company called Sipremo is using AI to predict where and when climate disasters will occur, and what type of climate disasters they will be.

The aim is to help businesses and governments better prepare for climate change and the growing challenges for communities that come with it.

The company works in industries including insurance, energy, logistics and sport, where its analysis of disaster conditions and factors such as air quality can inform decisions on whether to delay or suspend events.

7. A wish list of AI climate tools

Google DeepMind, Google’s AI research laboratory, says it is applying AI to help fight climate change in a number of areas.

This includes building a complete wish list of datasets that would advance global AI solutions for climate change. Google DeepMind is working on this with Climate Change AI , a non-profit organization set up by volunteers from academia and industry who see a key role for machine learning in combating climate change.

Other Google AI tools are focused on improving weather forecasting and increasing the value of wind energy by better predicting the output from a wind farm.

8. How AI can help industry decarbonize

AI is being used to help companies in the metal and mining, oil, and gas industries to decarbonize their operations.

Eugenie.ai , based in California, United States, has developed an emissions-tracking platform that combines satellite imagery with data from machines and processes.

AI then analyzes this data to help companies track, trace and reduce their emissions by 20-30%.

Industrial sectors generate around 30% of greenhouse gas emissions globally.

In response to the uncertainties surrounding generative AI and the need for robust AI governance frameworks to ensure responsible and beneficial outcomes for all, the Forum’s Centre for the Fourth Industrial Revolution (C4IR) has launched the AI Governance Alliance .

The Alliance will unite industry leaders, governments, academic institutions, and civil society organizations to champion responsible global design and release of transparent and inclusive AI systems.

9. Reforesting hills in Brazil using drones

AI-powered computers are pairing up with drones in Brazil to reforest the hills around the coastal city of Rio de Janeiro, Reuters reports. The computers define the targets and number of seeds to be dropped.

The initiative, which launched in January 2024, is a partnership between Rio's city hall and start-up Morfo, and aims to grow seeds in hard-to-reach areas.

A single drone can disperse 180 seed capsules per minute, which is 100 times faster than using human hands for traditional reforestation, according to the local government.

The potential of AI in the future

AI is one of the key emerging technologies explored in the World Economic Forum’s Top 10 Emerging Technologies of 2023 report.

The report specifically looks at generative AI – a type of AI that creates content including text, images and computer programming.

In the future, generative AI could be used in contexts such as drug design, architecture and engineering, the Forum says.

AI can also be used to improve agriculture and reduce its environmental impact by processing data from sensors placed on crops.

The technologies listed in the report, including sustainable aviation fuel, can be used to help tackle global challenges like the climate crisis – but more innovation is needed, the authors point out.

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Nearly 15% of Americans don’t believe climate change is real, study finds

Denialism highest in central and southern US, with Republican voters less likely to believe in climate science

Nearly 15% of Americans don’t believe climate change is real, a new study out of the University of Michigan reveals – shedding light on the highly polarized attitude toward global warming.

Additionally, denialism is highest in the central and southern US, with Republican voters found less likely to believe in climate science.

Using artificial intelligence, researchers analyzed over 7.4m tweets posted by roughly 1.3 million people on the social media platform X (previously Twitter ) between 2017 and 2019. The social media posts were geocoded, and classified as “for” or “against” climate change using a large language model, a type of artificial intelligence developed by OpenAI.

“Over half of the tweets we looked at simply denied that climate change was real, that it was a hoax,” said Joshua Newell, co-author of the study and professor of environment and sustainability at the University of Michigan. “It wasn’t surprising but it was disappointing, I would hope that more and more Americans would believe in climate change and the importance of addressing it.”

Donald Trump emerged as one of the most influential figures among climate change deniers. His tweets around a cold snap in Texas in December 2017, as well as his missives rejecting the 2018 IPCC report released at the Cop24 UN conference, were some of his most engaged social media posts among climate change deniers.

“Public figures such as Trump are highly influential,” Newell said, “when they use these events to trigger disbelief in climate change among social media users.”

The findings are consistent with similar studies, such as the recent survey out of Yale University which estimates that as of 2023, 16% of Americans do not believe in climate change (about 49 million people).

Acceptance and belief in global warming is most prevalent along the west and east coasts, correlating with those regions’ high rates of Democratic voters. Still, clusters of denialism exist within blue states, like in the case of Shasta county, California. There, disbelief in climate change is as high as 52%, but statewide, less than 12% of California’s population does not believe in global warming.

“It comports with my understanding that there is a small but very vocal and active minority of the public that still denies the overwhelming evidence of human-caused warming,” said Michael Mann, climatologist and geophysicist at the University of Pennsylvania, about the study.

Last week, Mann was awarded $1m in a defamation lawsuit against conservative writers who called his pioneering climate change research “fraudulent”, comparing it to the work of a convicted child molester. In his book The New Climate War, Mann argues that scientists have to rebut the misinformation and disinformation promoted on social media by bad actors, “not because we’re going to win them over, their ideological heels are dug in, but because they are infecting the entire social media space with myths, falsehoods and toxic anti-scientific sentiment”, Mann said.

Researchers’ use of AI helped classify millions of social media posts that otherwise would be too time-consuming and expensive to conduct. Still, some skepticism remains regarding the ethics of using AI for research, as artificial intelligence has a documented history of bias , especially in facial recognition , highlighting the need for human vetting.

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“It’s an intriguing new tool to use for these purposes,” Mann said. “But its limitations must be kept in mind as it’s an evolving technology.”

It is up to social media platforms to combat misinformation, and fact-check what the researchers call “knowledge vulnerability”.

“There is proper action by the social media companies to monitor disinformation and to act accordingly,” Newell said, referencing Trump’s ban from X (then Twitter) following the January 6 insurrection. “These very powerful social media companies should consider similar strategies for misinformation regarding climate change.”

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Teaching Ideas

Resources for Teaching About Climate Change With The New York Times

Dozens of resources to help students understand why our planet is warming and what we can do to stop it.

articles to read about climate change

By The Learning Network

How much do your students know about climate change — what causes it, what its consequences are and what we can do to stop it?

A 2022 report from the United Nations found that countries around the world are failing to live up to their commitments to fight climate change, pointing Earth toward a future marked by more intense flooding, wildfires, drought, heat waves and species extinction.

Young people in particular are feeling the effects — both physical and emotional — of a warming planet. In response to a writing prompt about extreme weather that has been intensified by climate change, teenagers told us about experiencing deadly heat waves in Washington, devastating hurricanes in North Carolina and even smoke from the California wildfires in Vermont. They’re also feeling the anxiety of facing a future that could be even worse: “How long do I have before the Earth becomes uninhabitable? I ask myself this every day,” one student wrote .

Over the years, we’ve created dozens of resources to help young people learn about climate change with New York Times articles, interactive quizzes, graphs, films and more. To mark this moment, we’re collecting 60 of them, along with selected recent Times reporting and Opinion pieces on the topic, all in one place.

To get you started, we’ve highlighted several of those resources and offered ideas for how you can use them in your classroom. Whether it’s a short video about a teenage climate activist, a math problem about electric vehicles, or a writing prompt about their diet’s carbon footprint, we hope these activities can get your students thinking and talking about climate change and inspire them to make a difference.

How are you teaching about the climate crisis, its consequences and its solutions? Let us know in the comments.

Ideas for Teaching About Climate Change With The New York Times

1. Understand climate change (and what we can do about it) with a digital children’s book.

The Times has published thousands of stories on climate change over the years, but many of them can be dense and difficult for young people to understand. Use this guide for kids to help your students learn the basics of the climate crisis and understand what choices can lead us to a bad future or a better future. We have a related lesson plan to help.

2. Assess climate choices with an interactive quiz.

What do your students know — or think they know — about the best ways to reduce their carbon footprints? In two Student Opinion prompts, we invite teenagers to test their knowledge with a mini-quiz about good climate choices or one about how much their diets contribute to climate change , and then share their results and reflections on what they learned.

3. Analyze climate change data with New York Times graphs.

Use our notice and wonder protocol to help students analyze graphs from The New York Times related to climate change. In 2019, we rounded up 24 graphs on topics such as melting ice, rising carbon emissions and global warming’s effect on humans. You can find our most recent graphs in our roundup below or by searching “climate change” in our What’s Going On in This Graph? archives.

Another option? Have students collect and analyze their own climate change data. See how a group of science and math teachers guided their classes to do just that in this Reader Idea .

4. Show a short film about the climate crisis’s impact on a vulnerable community.

Climate change will have a disproportionate effect on the world’s most vulnerable. What can we learn from them during the climate crisis? Invite students to watch the short film “ Rebuild or Leave ‘Paradise’: Climate Change Dilemma Facing a Nicaraguan Coastal Town ” about how intensifying storms are affecting the traditional way of life in the Miskito village of Haulover, and then participate in our Film Club .

If you want to explore this topic further, see our 2017 resource “ A Lesson Plan About Climate Change and the People Already Harmed by It .”

5. Use this lesson plan to explore ways to prevent the worst effects of climate change.

Every year, world leaders and activists meet to set new targets for cutting emissions to prevent the average global temperature from rising more than 1.5 degrees Celsius, the threshold beyond which the dangers of global warming grow immensely. But what will it take to get there? In this lesson , students participate in a jigsaw activity to explore seven solutions to climate change, from renewable energy and electric vehicles to nature conservation, carbon capture and more.

6. Invite students to share their thoughts, opinions and concerns with writing prompts.

“How can you not be scared of climate change? Every time you see some news on the state of the planet, can you not feel grief? I know I do,” one student wrote in response to our writing prompt, “ Do You Experience Climate Anxiety? ”

What do your students have to say about climate change? They can weigh in on this question and others about banning plastic bags , the environmental impact of plane travel , whether we should be more optimistic about the planet’s future and more. Find them all in our list of writing prompts below.

7. Apply a math concept to a real-world climate problem: gas or electric cars?

In this lesson , use the familiar formula y=mx+b to help students think through the economic and environmental costs and benefits of electric vehicles. Does “going green” mean saving some “wallet green” too?

8. Learn about climate activism with a video.

What power do ordinary people around the world have to make a difference in the climate crisis? Invite students to watch this eight-minute Opinion video about the teenage climate activist Greta Thunberg. Then, they can share what gives them hope in the fight against climate change in our related Film Club .

Students can learn more about Ms. Thunberg and her weekly climate protest in this lesson plan from 2019.

Resources for Teaching About Climate Change From The Learning Network and The New York Times

Here is a collection of selected Learning Network and New York Times resources for teaching and learning about climate change. From The Learning Network, there are lesson plans, writing prompts, films, graphs and more. And from NYTimes.com, there are related question and answer guides, as well as recent reporting and Opinion essays.

From The Learning Network

Lesson Plans

Lesson Plan: Using Statistics to Understand Extreme Heat (2022)

Lesson Plan: The Mississippi Water Crisis and What It Means for the Rest of the Nation (2022)

Lesson of the Day: ‘The Unlikely Ascent of New York’s Compost Champion’ (2022)

Lesson of the Day: ‘In the Ocean, It’s Snowing Microplastics’ (2022)

Lesson of the Day: ‘In Wisconsin: Stowing Mowers, Pleasing Bees’ (2022)

Lesson of the Day: ‘The People Who Draw Rocks’ (2022)

Lesson of the Day: ‘How Bad Is the Western Drought? Worst in 12 Centuries, Study Finds.’ (2022)

Lesson of the Day: ‘Meet Peat, the Unsung Hero of Carbon Capture’ (2022)

Lesson of the Day: ‘See How the Dixie Fire Created Its Own Weather’ (2021)

Lesson of the Day: ‘Bad Future, Better Future’ (2021)

Lesson of the Day: ‘Two Biden Priorities, Climate and Inequality, Meet on Black-Owned Farms’ (2021)

Gas or Electric? Thinking Algebraically About Car Costs, Emissions and Trade-offs (2021)

Lesson of the Day: ‘Where 2020’s Record Heat Was Felt the Most’ (2021)

Lesson of the Day: ‘50 Years of Earth Day: What’s Better Today, and What’s Worse’ (2020)

Lesson of the Day: ‘Why Does California Have So Many Wildfires?’ (2020)

Lesson of the Day: ‘Protesting Climate Change, Young People Take to Streets in a Global Strike’ (2019)

Lesson of the Day: ‘Becoming Greta: “Invisible Girl” to Global Climate Activist, With Bumps Along the Way’ (2019)

Lesson of the Day: ‘Glaciers Are Retreating. Millions Rely on Their Water.’ (2019)

Lesson of the Day: ‘Why the Wilder Storms? It’s a “Loaded Dice” Problem’ (2018)

Lesson of the Day: ‘Hotter, Drier, Hungrier: How Global Warming Punishes the World’s Poorest’ (2018)

Lesson of the Day: ‘The World Wants Air-Conditioning. That Could Warm the World.’ (2018)

A Lesson Plan About Climate Change and the People Already Harmed by It (2017)

Guest Post | Climate Change Questions for Young Citizen Scientists (2014)

Teaching About Climate Change With The New York Times (2014)

Writing Prompts

Should Students Learn About Climate Change in School? (2022)

How Far Is Too Far in the Fight Against Climate Change? (2022)

Should We Be More Optimistic About Efforts to Combat Climate Change? (2022)

Do You Experience Climate Anxiety? (2021)

How Have You Experienced Extreme Weather? (2021)

Do You Think You Make Good Climate Choices? (2021)

Should Plastic Bags Be Banned Everywhere? (2020)

Would You Change Your Eating Habits to Reduce Your Carbon Footprint? (2019)

Should We Feel Guilty When We Travel? (2019)

How Concerned Are You About Climate Change? (2018)

Should Schools Teach About Climate Change? (2018)

Film Club: ‘New Climate Promises, Same Old Global Warming’ (2022)

Film Club: ‘The Joy of Cooking (Insects)’ (2022)

Film Club: ‘Greta Thunberg Has Given Up on Politicians’ (2021)

Film Club: ‘Rebuild or Leave “Paradise”: Climate Change Dilemma Facing a Nicaraguan Coastal Town’ (2021)

Film Club: ‘“Goodbye, Earth”: A Story for Grown-Ups’ (2021)

Film Club: ‘Sinking Islands, Floating Nation’ (2018)

Teach About Climate Change With These 24 New York Times Graphs

What’s Going On in This Graph? | Calling for Climate Action

What’s Going On in This Graph? | Tree Rings and Climate

What’s Going On in This Graph? | Hotter Summers

What’s Going On in This Graph? | Endangered Biodiversity

What’s Going On in This Graph? | Extreme Temperatures

What’s Going On in This Graph? | Clean Energy Metals

What’s Going On in This Graph? | Global Carbon Emissions

What’s Going On in This Graph? | Wind and Solar Power

What’s Going On in This Graph? | Precipitation

What’s Going On in This Graph? | Gas-to-Electric Vehicle Turnover

What’s Going On in This Graph? | Growing Zones

What’s Going On in This Graph? | Global Climate Risks

What’s Going On in This Graph? | World Cities’ Air Pollution

What’s Going On in This Graph? | U.S. Air Pollution

What’s Going On in This Graph? | Climate Friendly Cars

What’s Going On in This Graph? | Climate Threats

What’s Going On in This Graph? | Global Temperature Change

What’s Going On in This Graph? | Global Water Stress Levels

What’s Going On in This Graph? | North American Bird Populations

What’s Going On in This Graph? | Dec. 11, 2019 (food and environment)

What’s Going On in This Graph? | Nov. 20, 2019 (greenhouse gas emissions)

What’s Going On in This Graph? | Oct. 9, 2019 (global temperatures)

What’s Going On in This Graph? | April 3, 2019 (first leaf appearance)

What’s Going On in This Graph? | March 13, 2019 (electricity generation)

Reader Idea: Interpreting Data to Understand Community Opinions on Climate Change

Vocabulary in Context: Mangrove Trees

Vocabulary in Context: Sustainable Architecture

On-Demand Panel for Students: Covering the Climate Crisis

From The New York Times

The Science of Climate Change Explained: Facts, Evidence and Proof (2021)

Searching for Hidden Meaning in Climate Jargon (2021)

A Crash Course on Climate Change, 50 Years After the First Earth Day (2020)

Your Questions About Food and Climate Change, Answered (2019)

Why Half a Degree of Global Warming Is a Big Deal (2018)

Climate Change Is Complex. We’ve Got Answers to Your Questions. (2017)

You Asked, Dr. Kate Marvel Answered. Browse Reader Questions on Climate Science.

Selected Recent Reporting

The New World: Envisioning Life After Climate Change (2022)

Beyond Catastrophe: A New Climate Reality Is Coming Into View (2022)

Ocean-Eaten Islands, Fire-Scarred Forests: Our Changing World in Pictures (2022)

Climate Pledges Are Falling Short, and a Chaotic Future Looks More Like Reality (2022)

U.N. Climate Talks End With a Deal to Pay Poor Nations for Damage (2022)

The World Is Falling Short of Its Climate Goals. Four Big Emitters Show Why. (2022)

Many States Omit Climate Education. These Teachers Are Trying to Slip It In. (2022)

Extreme Heat Will Change Us (2022)

To Fight Climate Change, Canada Turns to Indigenous People to Save Its Forests (2022)

The Unseen Toll of a Warming World (2022)

‘OK Doomer’ and the Climate Advocates Who Say It’s Not Too Late (2022)

6 Aspects of American Life Threatened by Climate Change (2021)

El Niño and La Niña, Explained (2021)

Wildfires Are Intensifying. Here’s Why, and What Can Be Done. (2021)

5 Things We Know About Climate Change and Hurricanes (2020)

Climate Change Is Scaring Kids. Here’s How to Talk to Them. (2019)

Losing Earth: The Decade We Almost Stopped Climate Change (2018)

Selected Recent Opinion

We Need to Rethink How to Adapt to the Climate Crisis (2022)

We Are Wasting Time on These Climate Debates. The Next Steps Are Clear. (2022)

Postcards From a World on Fire (2021)

The Disaster We Must Think About Every Day (2021)

‘He Just Cried for a While.’ This Is My Reality of Parenting During a Climate Disaster. (2021)

This Is the World Being Left to Us by Adults (2021)

Finding the Will to Stave Off a Darker Future (2021)

How to Calm Your Climate Anxiety (2021)

What Western Society Can Learn From Indigenous Communities (2021)

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Reduce, reuse, redirect outrage: How plastic makers used recycling as a fig leaf

Michael Copley

articles to read about climate change

A registered scavenger, who mainly collects plastic waste to sell, walking in a landfill in Indonesia. Yasuyoshi Chiba /AFP via Getty Images hide caption

A registered scavenger, who mainly collects plastic waste to sell, walking in a landfill in Indonesia.

The plastics industry has worked for decades to convince people and policymakers that recycling would keep waste out of landfills and the environment. Consumers sort their trash so plastic packaging can be repurposed, and local governments use taxpayer money to gather and process the material. Yet from the early days of recycling, plastic makers, including oil and gas companies, knew that it wasn't a viable solution to deal with increasing amounts of waste, according to documents uncovered by the Center for Climate Integrity .

Around the time the plastics industry launched its recycling campaign, the head of a trade group called the Vinyl Institute acknowledged at a 1989 conference that "recycling cannot go on indefinitely, and does not solve the solid waste problem."

One of the biggest challenges is that making new plastic is relatively cheap. But recycling generally costs as much as or more than the material is worth, a director of environmental solutions at B.F. Goodrich explained at another industry meeting in 1992 . The "basic issue," he said, "is economics."

How Big Oil Misled The Public Into Believing Plastic Would Be Recycled

Investigations

How big oil misled the public into believing plastic would be recycled.

But the industry appears to have championed recycling mainly for its public relations value, rather than as a tool for avoiding environmental damage, the documents suggest. "We are committed to the activities, but not committed to the results," a vice president at Exxon Chemical said during a meeting in 1994 with staff for the American Plastics Council, a trade group.

Ross Eisenberg, president of an industry group called America's Plastic Makers, said in a statement that the report from the Center for Climate Integrity "cites outdated, decades-old technologies, and works against our goals to be more sustainable by mischaracterizing the industry and the state of today's recycling technologies. This undermines the essential benefits of plastics and the important work underway to improve the way plastics are used and reused to meet society's needs."

America's Plastic Makers has set a goal for all plastic packaging in the U.S. to be "reused, recycled, recovered by 2040," Eisenberg said.

The Center for Climate Integrity compiled the documents in a report titled " The Fraud of Plastic Recycling: How Big Oil and the plastics industry deceived the public for decades and caused the plastic waste crisis ." It builds on earlier investigations, including by NPR , that have shown the plastics industry promoted recycling even though its officials have long known that the activity would probably never be effective on a large scale.

The world is awash in plastic. Oil producers want a say in how it's cleaned up

The world is awash in plastic. Oil producers want a say in how it's cleaned up

Former industry officials have said the goal was to avoid regulations and ensure that demand for plastics, which are made from fossil fuels, kept growing. Despite years of recycling campaigns, less than 10% of plastic waste gets recycled globally , and the amount of plastic waste that's dumped in the environment continues to soar .

The idea that recycling can solve the problem of plastic waste "has always been a fraud, and it's always been a way for the industry to sell more plastic," says Richard Wiles, president of the Center for Climate Integrity, which says it is working to hold oil and gas companies accountable for their role in fueling climate change.

articles to read about climate change

A pile of plastic waste and other garbage next to children playing on a bridge in the Philippines. George Calvelo /AFP via Getty Images hide caption

A pile of plastic waste and other garbage next to children playing on a bridge in the Philippines.

The U.N. is leading negotiations for a global plastics treaty

The Center for Climate Integrity published its report two months before the next round of United Nations talks is held in Canada for a legally binding global agreement on plastic waste. Negotiators from around 150 countries are expected to attend, as well as public health advocates, human rights activists, environmentalists and the oil and gas industry.

There's recently been growing concern among those who want deep cuts in plastic waste that plastic producers — corporations as well as countries such as China, Russia and Saudi Arabia — could weaken a global treaty by prioritizing recycling and other forms of waste management, rather than substantial cuts in new plastic production.

Global talks to cut plastic waste stall as industry and environmental groups clash

Global talks to cut plastic waste stall as industry and environmental groups clash

For fossil fuel producers, the petrochemical sector, which includes plastics, is crucial to business. As technologies like electric vehicles grow more popular, demand for products such as gasoline and diesel fuel is expected to decline . But oil and gas demand for petrochemicals is projected to continue rising for years . That's why the fossil fuel industry has a big stake in the outcome of the U.N. talks. If countries agree to reduce plastic manufacturing, it could hurt the industry's future profits.

Some experts say that creates a conflict of interest. Reducing how much new plastic gets made in the first place is a "prerequisite" to getting pollution under control, Carsten Wachholz, who works at the Ellen MacArthur Foundation and co-leads the Business Coalition for a Global Plastics Treaty, said late last year. But "if your businesses depend on extracting more oil and gas, and plastics is the fastest growing market for fossil fuels, it's hard to imagine that you would be a credible voice to say we need to limit plastic production," he said.

Global shift to clean energy means fossil fuel demand will peak soon, IEA says

Global shift to clean energy means fossil fuel demand will peak soon, IEA says

After the last round of negotiations ended in Kenya in November 2023, environmental groups complained that oil and gas producers blocked a final decision on how to advance the deliberations.

An industry advocacy group called American Fuel & Petrochemical Manufacturers has said that restricting fossil fuel production and plastic manufacturing are not good solutions. Instead, it said the goals of the treaty can be achieved "if waste is recyclable, properly managed and kept out of the environment."

An ExxonMobil spokesperson said in a statement in November 2023 that the company is "launching real solutions to address plastic waste and improve recycling rates." The company has previously said the problem of plastic waste can be solved without cutting how much plastic society uses.

Exxon is among a group of companies that have been investing in what the industry calls "advanced recycling" plants. The facilities are designed to turn plastic waste, including material that can't be processed through traditional mechanical recycling, into liquids and gasses that can then be used to make new plastics and other chemical products.

"Advanced recycling is a real, proven solution that can help address plastic waste and improve recycling rates," Exxon said in a statement to NPR.

However, critics say the technology is ineffective and harmful to the environment and human health.

The economics of plastic recycling "haven't changed at all. Not at all. And if virgin [plastic] was always cheaper and of higher quality, that's still the case today," says Wiles of the Center for Climate Integrity.

He says the plastics industry continues to mislead the public and needs to be held responsible for it.

"And from there, you can begin to have a conversation about how we're going to solve the problem," Wiles says. "But without accountability, you just can't get to solutions."

  • microplastics
  • oil and gas
  • climate change

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articles to read about climate change

Offshoring emissions through used vehicle exports

International trade of used vehicles lacks regulation on emissions standards. This study shows that vehicles exported from Great Britain generate substantially higher carbon and pollution emissions than scrapped or on-road vehicles.

  • Saul Justin Newman
  • Kayla Schulte
  • Douglas R. Leasure

articles to read about climate change

Political economy of just urban transition

Local governments need extensive funding to realize transformative climate ambitions and this raises the spectre of privileging outside interests over just transitions. Now, research unearths how such private financial interests shape city climate actions in ways both broader, and potentially more brittle, than previously understood.

  • David J. Gordon

articles to read about climate change

Municipal finance shapes urban climate action and justice

City fiscal and budgetary decisions play an essential role in the success of urban climate action. Using US cities as a case study, this Article reveals the interrelationship between urban climate finance, action and justice, as well as promising pathways to transform municipal finance practices.

  • Claudia V. Diezmartínez
  • Anne G. Short Gianotti

articles to read about climate change

Over-reliance on water infrastructure can hinder climate resilience in pastoral drylands

Building additional water infrastructure such as wells is a key strategy to mitigate the impacts of severe droughts, particularly in drylands. This study shows, however, that this infrastructure can lead to loss of resilience under climate change due to erosion of traditional practices.

  • Luigi Piemontese
  • Stefano Terzi
  • Elena Bresci

articles to read about climate change

Wetland emissions on the rise

Methane concentrations are rising faster than ever in the atmosphere. Now, a compilation of observations points towards increased methane emissions from Arctic wetlands as being partly responsible.

  • Torben R. Christensen

articles to read about climate change

Boreal–Arctic wetland methane emissions modulated by warming and vegetation activity

Whether methane emissions from the Boreal–Arctic region are increasing under climate change is unclear, but critical for determining climate feedbacks. This study uses observations and machine learning to show an increase in wetland methane emissions over the past two decades, with inter-annual variation.

  • Kunxiaojia Yuan

articles to read about climate change

Globally representative evidence on the actual and perceived support for climate action

Global support and cooperation are necessary for successful climate action. Large-scale representative survey results show that most of the population around the world is willing to support climate action, while a perception gap exists regarding other citizens’ intention to act.

  • Peter Andre
  • Teodora Boneva

articles to read about climate change

Inclusive and resilient mobility

  • Danyang Cheng

articles to read about climate change

Monitoring bias for genetic diversity

  • Tegan Armarego-Marriott

Complex drivers of droughts

  • Jasper Franke

Supply-chain adaptation

  • Lingxiao Yan

articles to read about climate change

Methane oxidation minimizes emissions and offsets to carbon burial in mangroves

Carbon sequestration in mangroves has been proposed as a mitigation strategy for climate change, yet the benefits of carbon burial may be offset by methane emissions. This study shows that methane offsets are small in saline and tropical mangroves, leading to greater net carbon sequestration.

  • Luiz C. Cotovicz Jr
  • Gwenaël Abril
  • Isaac R. Santos

articles to read about climate change

Ocean warming and warning

Oceans, covering more than 70% of Earth’s surface, play a vital role in regulating the climate by absorbing heat and carbon dioxide. Now research shows oceans have warmed by more than 1.5 °C since the beginning of the industrial era, challenging previous estimates and emphasizing the urgency of global action.

  • Wenfeng Deng

articles to read about climate change

300 years of sclerosponge thermometry shows global warming has exceeded 1.5 °C

Understanding temperature change since the pre-industrial period is essential for climate action. This study uses an ocean proxy to better quantify when anthropogenic warming began and estimates that global temperatures have already increased by 1.7 °C.

  • Malcolm T. McCulloch
  • Amos Winter
  • Julie A. Trotter

articles to read about climate change

Registered Report for climate research

In this issue of Nature Climate Change , we publish our first Registered Report. We encourage scientists from all climate research communities to consider this format in the future.

articles to read about climate change

A representative survey experiment of motivated climate change denial

The desire to justify carbon-emitting behaviours could influence people’s climate change beliefs due to motivated cognition. Based on a pre-registered survey experiment in the United States, the study, however, finds no evidence supporting the claim in explaining climate denial and environmentally harmful behaviour.

  • Lasse S. Stoetzer
  • Florian Zimmermann

articles to read about climate change

Production vulnerability to wheat blast disease under climate change

The authors estimate the global vulnerability of wheat crops to wheat blast under current and future climates. They show that warmer, more humid climates can increase wheat blast infection, particularly in the Southern Hemisphere, subsequently reducing global wheat production.

  • Diego N. L. Pequeno
  • Thiago B. Ferreira
  • Senthold Asseng

articles to read about climate change

Emergent climate change patterns originating from deep ocean warming in climate mitigation scenarios

How the climate system reacts to stabilized or decreasing CO 2 concentrations is not yet well understood. Here, the authors show that deep ocean warming and its slower heat release lead to unique patterns of ocean surface warming and precipitation.

  • Jong-Seong Kug
  • Jongsoo Shin

articles to read about climate change

Pacific tropical instability waves have intensified since the 1990s

Tropical instability waves (TIWs) are an important component of the equatorial Pacific climate. An analysis of satellite observations, in situ measurements and ocean circulation models indicates that TIW activity has intensified in the central equatorial Pacific by approximately 12 ± 6% per decade since the 1990s.

articles to read about climate change

Intensification of Pacific tropical instability waves over the recent three decades

Tropical instability waves (TIWs) are an important component of the equatorial Pacific climate. Here the authors show that TIW activity has intensified in the central equatorial Pacific at ∼12 ± 6% per decade over the recent three decades.

  • Minyang Wang
  • Shang-Ping Xie

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Chile risks repeat of deadly wildfires because of climate change, report says

A view shows a fire, following the spread of wildfires in Vina del Mar

Reporting by Alexander Villegas; Editing by Will Dunham

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2023 in photos: Extreme climate

Israeli negotiators to take part in new Gaza ceasefire talks, source and media say

Israel will take part in negotiations this weekend in Paris with the U.S., Qatar and Egypt on a potential deal for a ceasefire and release of hostages in Gaza, according to a source briefed on the matter and Israeli media.

Navalny's mother accuses Russian investigators of blackmailing her over son's funeral

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COMMENTS

  1. Climate Change

    Vocabulary Climate is sometimes mistaken for weather. But climate is different from weather because it is measured over a long period of time, whereas weather can change from day to day, or from year to year. The climate of an area includes seasonal temperature and rainfall averages, and wind patterns. Different places have different climates.

  2. The Science of Climate Change Explained: Facts, Evidence and Proof

    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...

  3. Climate Change Is Speeding Toward Catastrophe. The Next Decade Is

    It says that global average temperatures are estimated to rise 1.5 degrees Celsius (2.7 degrees Fahrenheit) above preindustrial levels sometime around "the first half of the 2030s," as humans...

  4. Climate change is a crisis. How did we get here?

    The planet's average surface temperature has risen by at least 1.1 degree Celsius since preindustrial levels of 1850-1900 — because people are loading the atmosphere with heat-trapping gases...

  5. Research articles

    Article 16 Feb 2024 Over-reliance on water infrastructure can hinder climate resilience in pastoral drylands Building additional water infrastructure such as wells is a key strategy to mitigate...

  6. Climate and Environment

    Wildfire Smoke Will Worsen, New Study Shows, and Protections Are Few. Climate change is amplifying wildfires, and more smoke means higher risk of heart and lung disease from inhaling tiny ...

  7. Research articles

    Emmanuel Hanert Article 30 Dec 2021 Phenological mismatches between above- and belowground plant responses to climate warming The authors conduct a meta-analysis to reveal mismatches in above-...

  8. News and Features

    With 26 Earth-observing satellite missions, as well as instruments flying on planes and the space station, NASA has a global vantage point for studying our changing planet. The agency will share that knowledge and data at the 28th U.N. Climate Change Conference of the Parties (COP28) happening from Thursday, Nov. 30 to Tuesday, Dec. 12.

  9. Scientists agree: Climate change is real and caused by people

    The scientific consensus that climate change is happening and that it is human-caused is strong. Scientific investigation of global warming began in the 19th century, and by the early 2000s, this research began to coalesce into confidence about the reality, causes, and general range of adverse effects of global warming.

  10. Home

    NASA's Global Climate Change website is going to look a little different in the coming months because we're heading to a new home, a more integrated portal on science.nasa.gov. Keep your eyes on our new space as we transition. Explore the new space Explore the new space

  11. What to read to understand climate change

    Oct 28th 2022 Share C LIMATE CHANGE touches everything. It is reshaping weather systems and coastlines, altering where crops can be grown, which diseases thrive, and how armies fight. Rising...

  12. Earth is warming faster than previously thought, scientists say, and

    The state-of-the-science report from the United Nations' Intergovernmental Panel on Climate Change says the world has rapidly warmed 1.1 degrees Celsius higher than pre-industrial levels, and is ...

  13. What We Know About Climate Change

    Scientists predict that it is highly likely that the rainfall patterns we all need for clean, fresh water will change, drying up in some places while causing floods in others. There is also significant evidence that, as a result of climate change, wildfires will worsen, destroying lives and property; that sea levels will rise, flooding many ...

  14. Earth's Changing Climate

    Climate is the long-term pattern of weather in a particular area. Weather can change from hour to hour, day to day, month to month or even from year to year. For periods of 30 years or more, however, distinct weather patterns occur. A desert might experience a rainy week, but over the long term, the region receives very little rainfall.

  15. How climate change affects life in the U.S. : NPR

    November 14, 20235:00 AM ET Heard on Morning Edition By Alejandra Borunda , Lauren Sommer , Rebecca Hersher 3-Minute Listen Climate change causes tens of billions of dollars in economic damage...

  16. What is climate change? A really simple guide

    Climate change is the long-term shift in the Earth's average temperatures and weather conditions. Over the last decade, the world was on average around 1.2C warmer than during the late 19th...

  17. Climate change

    Many climate change impacts have been felt in recent years, with 2023 the warmest on record at +1.48 °C (2.66 °F). Additional warming will increase these impacts and can trigger tipping points, such as melting all of the Greenland ice sheet. Under the 2015 Paris Agreement, nations collectively agreed to keep warming "well under 2 °C".However, with pledges made under the Agreement, global ...

  18. Climate change: The world just marked a year above a critical limit of

    CNN — Global warming surpassed 1.5 degrees Celsius over the past 12 months for the first time on record, new data shows, breaching a critical threshold that, if it continues, will push the limits...

  19. Nine breakthroughs for climate and nature in 2023 you may have missed

    2. A turning point in power emissions. The world was set on a track for emissions from the power sector to peak in 2023. Energy from renewables like wind and solar grew faster than the world's ...

  20. Climate change is hitting the planet faster than scientists ...

    NEWS 28 February 2022 Climate change is hitting the planet faster than scientists originally thought Latest IPCC climate report warns that rising greenhouse-gas emissions could soon outstrip...

  21. Nearly 15% of Americans deny climate change is real, AI study finds

    Using social media data and artificial intelligence in a comprehensive national assessment, a new University of Michigan study reveals that nearly 15% of Americans deny that climate change is real. Scientists have long warned that a warming climate will cause communities around the globe to face increasing risks due to unprecedented levels of ...

  22. 9 ways AI is helping tackle climate change

    And this is expected to lead to around 250,000 extra deaths a year between 2030 and 2050, from undernutrition, malaria, diarrhoea and heat stress alone. Here are nine ways AI is already helping to tackle climate change. 1. Icebergs are melting - AI knows where and how fast.

  23. Nearly 15% of Americans don't believe climate change is real, study

    Denialism highest in central and southern US, with Republican voters less likely to believe in climate science Nearly 15% of Americans don't believe climate change is real, a new study out of ...

  24. The World Is Quietly Losing the Land It Needs to Feed Itself

    The world is rapidly losing usable land for self-inflicted reasons, ranging from intensive agriculture and overgrazing of livestock to real estate development and, yes, climate change. The crisis ...

  25. Resources for Teaching About Climate Change With The New York Times

    Here is a collection of selected Learning Network and New York Times resources for teaching and learning about climate change. From The Learning Network, there are lesson plans, writing prompts ...

  26. Articles

    300 years of sclerosponge thermometry shows global warming has exceeded 1.5 °C Understanding temperature change since the pre-industrial period is essential for climate action. This study uses...

  27. New report unveils what plastic makers knew about recycling : NPR

    The Center for Climate Integrity published its report two months before the next round of United Nations talks is held in Canada for a legally binding global agreement on plastic waste.

  28. Browse Articles

    Stefano Terzi Elena Bresci Article Open Access 16 Feb 2024 Wetland emissions on the rise Methane concentrations are rising faster than ever in the atmosphere. Now, a compilation of observations...

  29. Climate Change to Slash African GDP by 7.1%, Study Shows

    Climate change will drive 200 million Africans into severe hunger, slash revenue from crops by 30% and cut average gross domestic product per capita by 7.1%, a new study shows.

  30. Chile risks repeat of deadly wildfires because of climate change

    Deadly wildfires like those that burned through central Chile and killed at least 133 people this month will become more likely in the South American country as climate change makes the world ...