Climate & Accountability Campaigns at the Union of Concerned Scientists @ucs.org. Your place for rigorous, independent, intersectional climate science. #EnvironmentalJustice always.
The 2026 UNEP Emissions Gap Report released today underscores the huge gulf between current country commitments to cut heat-trapping emissions and what’s needed to limit overshoot of global warming above 1.5°C.
🌏 Download here: bit.ly/4jzJpTk
In a poll released last week by Data for Progress, 75% of likely voters said they would oppose legislation that would give fossil fuel companies “legal immunity from having to pay for the damages they have caused by worsening climate change.”
New piece in @truthout on some recently revealed documents showing just how much companies like Exxon knew about climate, and just how much they lied. truthout.org/articles/new...
"Outside the Supreme Court, this was about more than a lawsuit. It was about people whose lives have been upended by fire and drought, and who came to the nation’s highest court hoping to be heard." #ClimateAccountability#ExxonKnew
"This new deposition is just the latest piece of evidence that Exxon knew it was promising more than its algae research could deliver... It shows how Exxon used advertising as a tool to mislead consumers about the risks of its business model." #ExxonKnew
En la última entrega de nuestra serie “El crimen del siglo”, revelamos con pruebas documentadas el fraude cometido por las grandes petroleras, por medio de sus grupos de fachada, para sembrar mentiras sobre el cambio climático. Escucha aquí: https://act.ucs.org/3Wu6FZ3
The U.S. is warming in every congressional district — but how much has your corner of the country changed?
A new #ClimateCentral analysis finds 2.8°F of warming on average across all 435 districts since 1970.
🔎Find your district and explore the data: www.climatecentral.org/climate-matt...
Together, these cases illustrate two key fronts in climate accountability: "Whether decision-makers must confront the full emissions consequences of fossil fuel extraction, and whether fossil fuel companies can be held responsible for the financial costs of climate harms linked to their conduct."
1/ We know, we know: talking about all these broken records is starting to make us sound like a broken record. But the U.S. hasn’t seen a string of record-breaking months like this. The last time was 1907, and back then record-keeping was new and breaking records was easy.
Another month, another temperature record.
Across the contiguous United States, September 2026 ranks as the warmest September on record, dating back to at least 1895, according to data.
5/ But the developing Super El Niño in the eastern Pacific Ocean is also starting to release a significant amount of heat into the atmosphere, adding an extra shot of warming to the Earth’s average temperature.
1/ We know, we know: talking about all these broken records is starting to make us sound like a broken record. But the U.S. hasn’t seen a string of record-breaking months like this. The last time was 1907, and back then record-keeping was new and breaking records was easy.
Another month, another temperature record.
Across the contiguous United States, September 2026 ranks as the warmest September on record, dating back to at least 1895, according to data.
3/ Globally, sea surface temperatures reached a new all-time high for September. Warmer oceans release a significant amount of heat and moisture into the atmosphere, leading to more heat and precipitation extremes globally.
Last week, the U.S. Supreme Court heard Big Oil's arguments to escape trial in Boulder, Colorado's climate deception lawsuit.
“To the people of Boulder: Science and justice are on your side,” said Gretchen Goldman, President and CEO of @ucs.org.
"The Marshall Fire left lasting scars on our community and shattered my sense of safety,” said Madison Schink, who still experiences anxiety after the fire and now lives near a Suncor refinery.
“There’s no doubt in my mind that Big Oil has fundamentally altered how I experience everyday life.”
“Before there’s a case number, there’s a life that matters,” said Zaire Calvin, who lost his sister, Evelyn McClendon, in the Eaton Fire. “We can build another house. We can’t bring back my sister’s life.”
From Altadena to Boulder, communities deserve their day in court to hold Big Oil accountable.
“I believe my state has a right and duty to protect my health and hold corporations like Suncor responsible for the damage they've caused,” said Alina Miranda, who lost her home and pets in the Marshall Fire.
“The Supreme Court should not take away the ability of my local government to protect me.”
The year: 1988.
The company: Exxon.
Their fear: “a worldwide consensus that action is needed” to mitigate the effects of greenhouse gases – with "substantial negative impacts" on business.
Exxon responds by revving up a disinfo campaign like never before. New internal docs offer new insight 🧵
The new documents exposing ExxonMobil's misleading claims about CCS are cited in a friend-of-the-court brief @ucs.org filed in Suncor v. Boulder. The brief outlines ExxonMobil & Suncor's concealment & denial of the hazards they knew would result from the normal use of their fossil fuel products.
Learn more about the fossil fuel industry's 60+ year history of climate deception & delay in our 2025 report "Decades of Deceit." With the harms of climate change mounting, fossil fuel companies MUST be held accountable for their ongoing efforts to spread disinformation and obstruct climate action.
The year: 1988.
The company: Exxon.
Their fear: “a worldwide consensus that action is needed” to mitigate the effects of greenhouse gases – with "substantial negative impacts" on business.
Exxon responds by revving up a disinfo campaign like never before. New internal docs offer new insight 🧵
New internal industry documents have been uncovered through Massachusetts' climate accountability lawsuit against ExxonMobil. They add to the body of evidence showing Big Oil's early knowledge of the dangers their products posed to the global climate and human wellbeing. Via @insideclimatenews.org.
The court filings also shed further light on ExxonMobil's #greenwashing, such as last decade's PR campaign touting "green" algae biofuel despite internal knowledge that the technology was unlikely to deliver results, and overblown claims about carbon capture & storage. This builds on past findings ⬇️
New blog from Laura Peterson publishes emails obtained through an open records request and reveals that some groups involved in the disinformation campaign at the heart of Boulder’s climate accountability lawsuit are shopping legislation to shield the fossil fuel industry from liability.
Analysis of the newly obtained emails sent by fossil fuel lobbyists to state legislators builds on a recent @propublica.org investigation showing that immunity bills introduced in a handful of state houses have stemmed from a network of groups connected to right-wing operative Leonard Leo.
People across the country who care about protecting democratic norms from the overreach of corporate interests should stay alert for these bills. No industry should be above the law.
Reach out to your state officials to let them know you want them to hold the fossil fuel industry accountable:
New blog from Laura Peterson publishes emails obtained through an open records request and reveals that some groups involved in the disinformation campaign at the heart of Boulder’s climate accountability lawsuit are shopping legislation to shield the fossil fuel industry from liability.
The American Legislative Exchange Council (ALEC) actively recruited sponsors this year for draft legislation that would not only bar future lawsuits against fossil fuel corporations and polluter-pays bills, but also nullify ongoing suits representing millions of people harmed by climate change.
Fossil fuel companies are angling to evade accountability through the Supreme Court—but the facts are simply not on their side.
Even with the Trump admin's full backing of the industry, “the age of accountability for the fossil fuel industry has just begun.”
The Super El Niño is breaking charts as well as records, including Climate Reanalyzer's, which previously went to 30 degrees C but had to be updated today. SSTs in this part of the Pacific are in unprecedented territory - and rising - roughly two months before the typical El Niño peak.
They are part of a major rally outside the US Supreme Court as oral arguments begin in a historic climate deception lawsuit against ExxonMobil & Suncor Energy.
#SuncorvBoulder
Learn more:
🚨 HAPPENING NOW AT THE SUPREME COURT 🚨
UCS President & CEO @gretchentg.bsky.social and former Washington Governor @govjayinslee.bsky.social are joining forces with survivors of devastating wildfires from Colorado and California.
1/ A very active Eastern Pacific Hurricane season: 20 named storms, of which 9 became hurricanes & 7 major hurricanes, due to a strong El Niño on top of background human-induced climate change. Hurricane Polo (#17) has slammed Baja California and is heading to New Mexico/Texas this week.
3/ At the same time, many of these locations are also experiencing moderate to exceptional drought. Dallas had no measurable rain for 67 days (July 16th – September 20th), which is tied 2nd for consecutive days without measurable precipitation.
4/ These long dry spells, followed by short, intense precipitation events, are classic hydroclimate whiplash signals, a consequence of human-induced climate change, as our colleague Dr. Marc Alessi writes. Act now to protect NOAA/FEMA from Trump budget cuts: secure.ucs.org/a/2025-prote...
1/ A very active Eastern Pacific Hurricane season: 20 named storms, of which 9 became hurricanes & 7 major hurricanes, due to a strong El Niño on top of background human-induced climate change. Hurricane Polo (#17) has slammed Baja California and is heading to New Mexico/Texas this week.
2/ Remnants of Hurricane Polo will interact with a frontal system moving over the Southwest and Texas, bringing multiple inches of rain in the span of a few days over these areas. Flash Flood watches have been issued across a large swath of the country as a result.
This is huge!
The UN Secretary-General António Guterres has just used his final General Assembly speech to world leaders to pay tribute to our #MakePollutersPay movement. “You are on the right side of history – keep going.”
This movement is powerful. We are changing politics. Get involved!
This weekend the NE US is facing a strong, rare Sept Nor'easter. Wind damage & coastal flooding (worsened by sea level rise) are expected. In this 2025 blog, UCS’s @marc-alessi.bsky.social, explains how nor'easters are being influenced by warmer oceans, courtesy of climate change.
On October 5, the U.S. Supreme Court will consider ExxonMobil and Suncor Energy’s arguments to escape trial in the City and County of Boulder, Colorado’s climate deception lawsuit.
Join us in Washington, D.C., to show support for Boulder and all communities seeking accountability.
🌍 Today at the UN, we presented 2 million+ signatures calling for fossil-fuel companies to pay for the climate damage they cause.
The powerful response: “Polluters must pay… We are with you. Use every tool at your disposal to hold the polluters accountable. You are on the right side of history."
At least 124 environmental defenders were killed in 2025. Organized crime, extractive industries and authoritarian governments all contributed to the violence, a new report says.
insideclimatenews.org/news/1509202...
Voluntary standards put forward by bodies like GHG Protocol, Science-Based Targets Initiative & International Standards Organization play an important role in helping companies understand their climate impact and make choices that benefit their bottom lines and protect the health of people & planet.
A recent report by Oxford University found that while most standards organizations have well-defined governance policies, execution and evaluation of those policies aren’t always easy to verify.
UCS has joined 43 other orgs in calling for standards bodies to follow 10 principles to strengthen their own governance and credibility. The principles cover financial transparency, transparent decision-making criteria, and respect for scientific & legal foundations, among other recommendations:
Voluntary standards put forward by bodies like GHG Protocol, Science-Based Targets Initiative & International Standards Organization play an important role in helping companies understand their climate impact and make choices that benefit their bottom lines and protect the health of people & planet.
That’s why strong governance of these standards is important. This means decision-making must be transparent and accountable to prevent undue industry influence and conflicts of interest.
🚨 VICTORY! The Big Oil immunity bill has stalled (for now) after the House Judiciary Committee adjourned before bringing the bill for a vote.
This fight is far from over, but today is a victory for those who agree that no industry should be above the law.
🚨 BREAKING: This Wednesday (9/16), the House Judiciary Committee will hold a markup on legislation that aims to give Big Oil companies sweeping immunity from any laws or lawsuits seeking to hold them accountable for their role in the climate crisis.
"This indefensible, dangerous bill seeks to put an industry that has been lying to the public for decades above the law. And the cherry on top of this sweet giveaway to polluters: the bill attempts to codify climate science denial by misrepresenting the field of attribution science."—Kathy Mulvey
"This indefensible, dangerous bill seeks to put an industry that has been lying to the public for decades above the law. And the cherry on top of this sweet giveaway to polluters: the bill attempts to codify climate science denial by misrepresenting the field of attribution science."—Kathy Mulvey
🚨BIG OIL IS RACING TO BE ABOVE THE LAW🚨
HR 8330, which aims to give Big Oil immunity from all climate laws and lawsuits, will be considered in the House Judiciary Committee on Wednesday.
No industry should be above the law — especially one that has lied to the American people for decades.
According to new data, August 2026 was the hottest Aug on record globally, tying July 2023 as the hottest month in recorded history. The heat is in part due to record ocean temperatures across the globe from the burning of fossil fuels and the developing Super El Niño. @copernicusecmwf.bsky.social