SUBSCRIBE TO OUR FREE NEWSLETTER
Daily news & progressive opinion—funded by the people, not the corporations—delivered straight to your inbox.
5
#000000
#FFFFFF
");background-position:center;background-size:19px 19px;background-repeat:no-repeat;background-color:#222;padding:0;width:var(--form-elem-height);height:var(--form-elem-height);font-size:0;}:is(.js-newsletter-wrapper, .newsletter_bar.newsletter-wrapper) .widget__body:has(.response:not(:empty)) :is(.widget__headline, .widget__subheadline, #mc_embed_signup .mc-field-group, #mc_embed_signup input[type="submit"]){display:none;}:is(.grey_newsblock .newsletter-wrapper, .newsletter-wrapper) #mce-responses:has(.response:not(:empty)){grid-row:1 / -1;grid-column:1 / -1;}.newsletter-wrapper .widget__body > .snark-line:has(.response:not(:empty)){grid-column:1 / -1;}:is(.grey_newsblock .newsletter-wrapper, .newsletter-wrapper) :is(.newsletter-campaign:has(.response:not(:empty)), .newsletter-and-social:has(.response:not(:empty))){width:100%;}.newsletter-wrapper .newsletter_bar_col{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:8px 20px;margin:0 auto;}.newsletter-wrapper .newsletter_bar_col .text-element{display:flex;color:var(--shares-color);margin:0 !important;font-weight:400 !important;font-size:16px !important;}.newsletter-wrapper .newsletter_bar_col .whitebar_social{display:flex;gap:12px;width:auto;}.newsletter-wrapper .newsletter_bar_col a{margin:0;background-color:#0000;padding:0;width:32px;height:32px;}.newsletter-wrapper .social_icon:after{display:none;}.newsletter-wrapper .widget article:before, .newsletter-wrapper .widget article:after{display:none;}#sFollow_Block_0_0_1_0_0_0_1{margin:0;}.donation_banner{position:relative;background:#000;}.donation_banner .posts-custom *, .donation_banner .posts-custom :after, .donation_banner .posts-custom :before{margin:0;}.donation_banner .posts-custom .widget{position:absolute;inset:0;}.donation_banner__wrapper{position:relative;z-index:2;pointer-events:none;}.donation_banner .donate_btn{position:relative;z-index:2;}#sSHARED_-_Support_Block_0_0_7_0_0_3_1_0{color:#fff;}#sSHARED_-_Support_Block_0_0_7_0_0_3_1_1{font-weight:normal;}.sticky-sidebar{margin:auto;}@media (min-width: 980px){.main:has(.sticky-sidebar){overflow:visible;}}@media (min-width: 980px){.row:has(.sticky-sidebar){display:flex;overflow:visible;}}@media (min-width: 980px){.sticky-sidebar{position:-webkit-sticky;position:sticky;top:100px;transition:top .3s ease-in-out, position .3s ease-in-out;}}.grey_newsblock .newsletter-wrapper, .newsletter-wrapper, .newsletter-wrapper.sidebar{background:linear-gradient(91deg, #005dc7 28%, #1d63b2 65%, #0353ae 85%);}
To donate by check, phone, or other method, see our More Ways to Give page.
Daily news & progressive opinion—funded by the people, not the corporations—delivered straight to your inbox.
"We're talking about real people who died, real crops that failed, and real communities that suffered, all because of decisions made in corporate boardrooms," said one campaigner.
A study published Wednesday in the journal Nature establishing "that the influence of climate change on heatwaves has increased, and that all carbon majors, even the smaller ones, contributed substantially to the occurrence of heatwaves," is fueling fresh calls for fossil fuel giants to pay for the deadly impacts of their products.
With previous "attribution studies," scientists have generally looked at single extreme weather events. The new study, led by Sonia Seneviratne, a professor at the Swiss university ETH Zurich, is unique for its systematic approach—but that's not all.
"Past studies have mostly looked at emissions from people and countries. This time, we're focusing on the big carbon emitters," explained lead author Yann Quilcaille, a postdoctoral researcher in Seneviratne's group, in a statement.
"We are now at the point where we recognize the serious consequences of extreme weather events for the world's economies and societies—heat-related deaths, crop failures, and much, much more," he said. "People are concerned about who contributed to these disasters."
The researchers found that climate change made 213 heatwaves from 2000–23 "more likely and more intense, to which each of the 180 carbon majors (fossil fuel and cement producers) substantially contributed." They also found that global warming since 1850-1900 made heatwaves 2000-09 about 20 times more likely, and those 2010-19 more likely.
"Overall, one-quarter of these events were virtually impossible without climate change," the paper states. "The emissions of the carbon majors contribute to half the increase in heatwave intensity since 1850-1900. Depending on the carbon major, their individual contribution is high enough to enable the occurrence of 16-53 heatwaves that would have been virtually impossible in a preindustrial climate."
Anybody surprised? Emissions from 14 fossil fuel giants drove 213 major heatwaves since 2000, making >50 deadly ones 10,000× more likely and adding up to +2.2°C increased intensityAll while knowing the impact of GHG emissionsCorporate negligence =Human costwww.theguardian.com/environment/...
[image or embed]
— Ian Hall (@ianhall.bsky.social) September 10, 2025 at 12:37 PM
While the study highlights the climate pollution of "14 top carbon majors," including the governments of the former Soviet Union, China (coal and cement), India (coal), and the companies Saudi Aramco, Gazprom, ExxonMobil, Chevron, National Iranian Oil Company, BP, Shell, Pemex, and CHN Energy, Quilcaille said that "the contributions of smaller players also play a significant role."
"These companies and corporations have also primarily pursued their economic interests, even though they have known since the 1980s that burning fossil fuels will lead to global warming," the researcher added.
In a review of the study for Nature, climate scientist Karsten Hausten from Germany's Leipzig University pointed out that "Quilcaille and colleagues' results, as well as the attribution framework that they have developed, provide a tool to continue the legal battle against individual companies and countries."
"This study is a leap forward that could be used to support future climate lawsuits and aid diplomatic negotiations," he wrote. "Finally, it is another reminder that denial and anti-science rhetoric will not make climate liability go away, nor will it reduce the ever-increasing risk to life from heatwaves across our planet."
Hausten was far from alone in recognizing how the new research could contribute to climate cases. Jessica Wentz, senior fellow at the Sabin Center for Climate Change Law at Columbia University, pointed to the International Court of Justice's landmark advisory opinion from July that countries have a legal obligation to take cooperative action against the global crisis.
"Initially, when a plaintiff needs to show that they have standing in a case, they have to allege that they have an injury that is traceable to the defendant's conduct," she told CBC, suggesting the new study will help establish that connection.
"The methodologies that underpin these types of findings can also be used in more fungible ways to look at not only the contributions of the carbon majors, but presumably you could use a similar approach to start looking at government," Wentz said.
Christopher Callahan, a scientist at Indiana University Bloomington who has published research showing that economic damages from rising extreme heat can be tied to companies such as Exxon, said that "this study adds to a growing but still small literature showing it's now possible to draw causal connections between individual emitters and the hazards from climate change."
"There is a wealth of evidence now that major fossil fuel producers were aware of climate change before the rest of the public was and used their power and profit to undermine climate action and discredit climate science," he said, adding that it is "morally appropriate" to hold companies accountable for the emissions of their products.
Callahan also gathered some of the relevant research in a series of posts on Bluesky, noting that on the same day that this new study was published, another team "quantified the thousands of heat-related deaths in Zurich, Switzerland that can be attributed to climate change—and showed that dozens of these deaths are due to the emissions from these individual firms."
"Together, this science—and the broader attribution science that preceded it—are building a clear scientific case for climate accountability," he concluded.
Several US states and municipalities in recent years have launched lawsuits and passed legislation designed to make Big Oil pay for driving the deadly climate emergency—and earlier this year, drawing on an essay in the Harvard Environmental Law Review, an American woman filed the first climate-related wrongful death suit against fossil fuel companies.
In a Wednesday statement to The Guardian about the new study, Cassidy DiPaola, a spokesperson for the Make Polluters Pay campaign, said that "we can now point to specific heatwaves and say: 'Saudi Aramco did this. ExxonMobil did this.'"
"When their emissions alone are triggering heatwaves that wouldn't have happened otherwise," she added, "we're talking about real people who died, real crops that failed, and real communities that suffered, all because of decisions made in corporate boardrooms."
"We've got to work fast to end fossil fuel operations near our homes, schools, and hospitals and trade fossil fuel infrastructure for healthy, clean energy," said one co-author.
"The evidence is clear that fossil fuels—and the fossil fuel industry and its enablers—are driving a multitude of interlinked crises that jeopardize the breadth and stability of life on Earth."
That's the first line of the abstract for an article published Monday by top scientists who reviewed "the vast scientific evidence showing that fossil fuels and the fossil fuel industry are the root cause of the climate crisis, harm public health, worsen environmental injustice, accelerate biodiversity extinction, and fuel the petrochemical pollution crisis."
The new paper in the peer-reviewed journal Oxford Open Climate Change highlights the diverse impacts of "every stage of the fossil fuel life cycle" and stresses that the "industry has obscured and concealed this evidence through a decadeslong, multibillion-dollar disinformation campaign aimed at blocking action to phase out" its deadly products.
"The fossil fuel industry has spent decades misleading us about the harms of their products and working to prevent meaningful climate action," said co-author Naomi Oreskes, professor of the history of science at Harvard University, in a statement. "Perversely, our governments continue to give out hundreds of billions of dollars in subsidies to this damaging industry. It is past time that stops."
"The most polluted communities should be prioritized for clean energy investments and removal and cleanup of dirty fossil fuel infrastructure."
While the researchers focused on the United States, "as the world's largest oil and gas producer and dominant contributor to these fossil fuel crises," their review—including proposed "science-and-justice-based solutions" for an economywide effort to "forge a path forward to sustaining life on Earth"—applies to the whole world, which is quickly heating up due to emissions from coal, gas, and oil.
The article features sections on the fossil fuel-driven climate crisis, public health harms, environmental injustice, biodiversity loss and extinction, petrochemical pollution, and industry disinformation. Each section lays out the "problem" and "solutions."
The climate emergency section includes details such as "the production and combustion of oil, gas, and coal are responsible for nearly 90% of human-caused carbon dioxide (CO2) emissions and approximately 79% of total greenhouse gas emissions," and "failures in political will to implement necessary climate action have made the 1.5°C benchmark nearly impossible to achieve without overshoot," referring to a primary goal of the 2015 Paris agreement.
Although the current U.S. administration has demonstrated its alliance to the fossil fuel industry—including with President Donald Trump's recent energy emergency declaration—the scientists still emphasized what's possible in the country.
"In the USA, powerful policy levers are available to governments and civil society at the local, state, national, and international levels to phase out fossil fuels and transition to a clean, renewable energy economy," they wrote. "These levers include regulation (e.g. applying and enforcing existing laws), legislation (e.g. polluters pay laws, fossil fuel subsidy reform, land use laws limiting drilling), and litigation (e.g. holding fossil fuel companies accountable, defending existing law)."
They also warned that "last-ditch efforts to prolong the fossil fuel industry are proliferating. These include counterproductive false solutions, like carbon capture and storage (CCS), which would perpetuate fossil fuel use while capturing only some of the resulting emissions, and hydrogen made from fossil fuels."
The public health section notes that "air pollution from fossil fuel combustion accounts for 8.7 million (equaling 1 in 5) premature deaths per year worldwide and 350,000 premature deaths per year in the USA. In a single year, air pollution from oil and gas production in the USA resulted in 410,000 asthma exacerbations, 2,200 new cases of childhood asthma, and 7,500 premature deaths in 2016."
Co-author David J.X. González, an assistant professor of environmental health sciences at the University of California, Berkeley, said Monday that "we've got to work fast to end fossil fuel operations near our homes, schools and hospitals and trade fossil fuel infrastructure for healthy, clean energy."
"Oil, gas, and coal will continue to condemn us to more deaths, wildlife extinctions, and extreme weather disasters unless we make dirty fossil fuels a thing of the past."
The paper points out that "climate change is increasing incidence of physical and mental health impacts and mortality through multiple pathways: worsening extreme events including heatwaves, severe storms, floods, droughts, and wildfires; shifting ranges of disease vectors; threats to food security; and displacement and forced migration, which restrict access to healthcare and other basic services."
"These harms, though broadly felt, also disproportionately impact marginalized communities which are already disproportionately burdened by other socioenvironmental hazards, as well as susceptible populations including young children, people with certain disabilities, people experiencing homelessness, pregnant people, people with chronic diseases, and older adults," the publication continues.
University of Montana associate professor of environmental studies Robin Saha, another co-author, said that "decades of discriminatory policies, such as redlining, have concentrated fossil fuel development in Black, Brown, Indigenous, and poor white communities, resulting in devastating consequences."
"For far too long, these fenceline communities have been treated as sacrifice zones by greedy, callous industries," Saha added. "The most polluted communities should be prioritized for clean energy investments and removal and cleanup of dirty fossil fuel infrastructure."
The paper's other co-authors are Robert Bullard of Texas Southern University, Boston University's Jonathan J. Buonocore and Mary D. Willis, Trisia Farrelly of the Cawthron Institute, William Ripple of Oregon State University, and the Center for Biological Diversity's Nathan Donley, John Fleming, and Shaye Wolf.
"The science can't be any clearer that fossil fuels are killing us," declared Wolf, the paper's lead author and the center's climate science director. "Oil, gas, and coal will continue to condemn us to more deaths, wildlife extinctions, and extreme weather disasters unless we make dirty fossil fuels a thing of the past. Clean, renewable energy is here, it's affordable, and it will save millions of lives and trillions of dollars once we make it the centerpiece of our economy."
"With this latest denial, the fossil fuel industry's worst nightmare—having to face the overwhelming evidence of their decades of calculated climate deception—is closer than ever to becoming a reality," said one advocate.
Climate campaigners and scientists on Monday welcomed the U.S. Supreme Court's decision to reject attempts by fossil fuel giants to quash the Hawaii capital's lawsuit aiming to hold the major polluters accountable for the devastating impacts of their products.
"This is a significant day for the people of Honolulu and the rule of law," Ben Sullivan, executive director and chief resilience officer at the City and County of Honolulu's Office of Climate Change, Sustainability, and Resiliency, said in a statement.
"This landmark decision upholds our right to enforce Hawaii laws in Hawaii courts, ensuring the protection of Hawaii taxpayers and communities from the immense costs and consequences of the climate crisis caused by the defendants misconduct," he added.
Honolulu first sued companies including BP, Chevron, ConocoPhillips, ExxonMobil, Shell, and Sunoco in March 2020. The companies have fought to shut down the case—like dozens of other climate liability lawsuits that states and municipalities have filed against Big Oil at the state level.
Shell and Sunoco led a pair of appeals to the Supreme Court, arguing that Honolulu's suit was "a blueprint for chaos" because it could inform other legal actions against fossil fuel companies and such cases "could threaten the energy industry." Similar to three previous decisions, the justices declined to intervene.
Center for Climate Integrity president Richard Wiles connected Monday's victory to the other cases, saying in a statement that "Big Oil companies keep fighting a losing battle to avoid standing trial for their climate lies."
"With this latest denial, the fossil fuel industry's worst nightmare—having to face the overwhelming evidence of their decades of calculated climate deception—is closer than ever to becoming a reality," Wiles continued. "Communities everywhere are paying dearly for the massive damages caused by Big Oil's decadeslong climate deception. The people of Honolulu and communities across the country deserve their day in court to hold these companies accountable."
Delta Merner, lead scientist for the Union of Concerned Scientists' Science Hub for Climate Litigation, similarly celebrated the decision, which she called "a resounding affirmation of Honolulu's right to seek justice under state law for the mounting climate impacts caused by fossil fuel companies' deceptive practices."
"For more than 50 years, fossil fuel companies have conducted sophisticated disinformation campaigns to obscure their own research showing that burning fossil fuels would drive climate change," Merner highlighted. "This case lays bare how these actions have contributed to rising seas, intensified storms, and coastal erosion that are devastating Honolulu's people, infrastructure, and natural resources."
"Scientific evidence is unequivocal: The human-caused emissions from fossil fuels are the primary driver of climate change," she stressed. "Honolulu's case stands as an example of how communities are using both science and the law to challenge corporate misconduct and demand accountability for climate damages."
Merner added that "the people of Honolulu are demonstrating remarkable leadership in standing up to powerful fossil fuel companies whose disinformation campaigns have directly contributed to the climate harms they now face. Their efforts serve as a powerful example for communities around the world. This decision is one step in a larger effort to seek accountability and justice."
The Supreme Court's latest blow to the oil and gas industry came just a week before the second inauguration of President-elect Donald Trump, who courted Big Oil executives on the campaign trail and pledged to "drill, baby, drill" if he won the November election.
The high court—which has a right-wing supermajority that includes three Trump appointees—had asked the Biden administration to weigh in. Last month, U.S. Solicitor General Elizabeth Prelogar
urged the justices not to intervene. Merner said at the time that her briefs "represent an important step in the pursuit of climate accountability."