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"The Trump regime is sending a clear message to the world that the US refuses to take responsibility for its own actions," said one campaigner.
President Donald Trump's withdrawal of the United States from dozens of international treaties and organizations and his administration's cuts to climate research and emergency response come as the frequency, lethality, and cost of major extreme weather disasters grow, according to an analysis published Thursday.
The Climate Central analysis of billion-dollar US weather and climate disasters revealed that 2025 saw the third-highest annual number of such events, trailing only the two previous years. At least 276 deaths and $115 billion in damages are attributable to such disasters.
This analysis also came as California observed the one-year anniversary of wildfires that killed 31 people and caused billions of dollars in damages, making them among the most expensive wildfires on record.
The new research is the first update of Climate Central's US Billion-Dollar Weather and Climate Disasters database, which was launched last October. The resource will help fill an information void caused by the Trump administration's move in May ending updates to the government's own database that tracked climate disasters causing more than $1 billion in damage.
After the US admin cancelled the $B Climate + Weather Disaster dataset, @climatecentral.org hired the scientists who ran it and set it back up. Now the 2025 numbers are in: it's 3rd highest year on record and highest year w/o land-falling hurricanes. More: www.climatecentral.org/climate-serv...
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— Katharine Hayhoe (@katharinehayhoe.com) January 8, 2026 at 9:33 AM
Key findings of Climate Central's update include:
"This trend of increasingly deadly and expensive disasters is occurring as the Trump administration continues to defund and cut staff at the National Oceanic and Atmospheric Administration (NOAA), the nation’s foremost science agency whose mission includes tracking and studying weather and climate, and the Federal Emergency Management Agency (FEMA) that prepares for, responds to, and helps communities recover from disasters," the Union of Concerned Scientists (UCS) said Thursday in response to the new research.
Additionally, Trump on Wednesday signed a legally dubious executive order under which the US will become the first country to ever quit the United Nations Framework Convention on Climate Change (UNFCCC), the parent treaty serving as the foundation for international accords including the Kyoto Protocol and Paris Agreement.
Trump's order also pulls the US from the Intergovernmental Panel on Climate Change (IPCC), International Renewable Energy Agency & International Solar Alliance, International Union for Conservation of Nature, and numerous other agreements and organizations, even as the human-caused climate emergency worsens.
Experts stress that this is the opposite of what governments should be doing amid a worsening planetary crisis.
“As a nation, we must invest much more in resilience measures as well as sharply cut the heat-trapping emissions driving climate change," UCS Climate and Energy program senior policy director Rachel Cleetus said Thursday. "This administration has instead clawed back funding for climate resilience projects, politicized disaster aid, and is doing its utmost to boost fossil fuels and worsen the climate crisis. Congress must step up to oppose these harmful actions and help keep people safe.”
Basav Sen, a climate leader at the Institute for Policy Studies, on Thursday noted that the US is "the world’s largest cumulative greenhouse gas emitter, and the largest producer and exporter of oil and gas today."
"By walking away from the UNFCCC and the IPCC," Sen added, "the Trump regime is sending a clear message to the world that the US refuses to take responsibility for its own actions."
"The report is very clear: This crisis is driven by the profit-driven production of coal, oil, and gas," one climate advocacy group said.
Climate-heating carbon dioxide is accumulating in the atmosphere more rapidly than at any time since humans evolved.
That's just one of the alarming findings from the World Meteorological Organization's (WMO) Greenhouse Gas Bulletin, released Monday, which found that all three main greenhouse gases reached record atmospheric levels in 2023.
"Words fail," the group Climate Defiance wrote on social media in response to the news.
"Greenhouse gas pollution at these levels will guarantee a human and economic trainwreck for every country, without exception."
Atmospheric concentrations of CO2 hit 420.0 parts per million (ppm) in 2023, an increase of 151% since the Industrial Revolution and a level not seen since 3 to 5 million years ago, when global temperatures was 2-3°C hotter than today and sea levels were 10-20 meters higher. Methane hit 1,934 parts per billion (ppb)—or 265% higher than preindustrial levels—and nitrous oxide rose to 336.9 ppb, 125% of pre-1750 levels.
"Another year. Another record," WMO Secretary-General Celeste Saulo said in a statement. "This should set alarm bells ringing among decision-makers. We are clearly off track to meet the Paris agreement goal of limiting global warming to well below 2°C and aiming for 1.5°C above preindustrial levels. These are more than just statistics. Every part per million and every fraction of a degree temperature increase has a real impact on our lives and our planet."
Carbon dioxide rose by 2.3 ppm in 2023. While that was higher than the 2022 increase, it was lower than in 2019-2021. However, on a longer-term scale, atmospheric CO2 rose by 11.4% in the past 10 years, a record increase during human existence. The burning of fossil fuels is the primary cause of this increase.
"The report is very clear: This crisis is driven by the profit-driven production of coal, oil, and gas," Climate Defiance wrote. "Because of these fuels, planet-heating pollution levels have gone up by 51.5%—since 1990 alone."
However, 2023's CO2 increases were also caused by forest fires—including a record-breaking fire season in Canada—as well as a possible reduction in the ability of Earth's natural carbon sinks to absorb the greenhouse gas. While vegetation-related CO2 emissions are partially influenced by natural cycles—El Niño years like 2023 are drier and tend to see more fires—they could also be a sign of dangerous feedback loops.
"The Bulletin warns that we face a potential vicious cycle," said WMO Deputy Secretary-General Ko Barrett. "Natural climate variability plays a big role in carbon cycle. But in the near future, climate change itself could cause ecosystems to become larger sources of greenhouse gases."
"Wildfires could release more carbon emissions into the atmosphere, whilst the warmer ocean might absorb less CO2. Consequently, more CO2 could stay in the atmosphere to accelerate global warming," Barrett explained. "These climate feedbacks are critical concerns to human society."
The report also said that even if emissions were to cease rapidly, the amount of carbon dioxide in the atmosphere means that the current rise in temperatures would linger for decades.
The rise in methane is also a concern. While it increased less in 2023 than in 2022, it hit a record-high increase over the last five years, and some of this could be due to climate feedback loops such as the melting of the Arctic permafrost or greater emissions from wetlands and other natural ecosystems as temperatures rise.
As Climate Defiance noted, WMO's graph showing the rise of methane appears to move from a linear to an exponential progression as it approaches 2023.
"It could literally be the graph that defines human history," Climate Defiance wrote.
"The most infuriating part is it didn't have to be this way," the group continued. "Had we started taking action in the 1970s—when the threat became clear—we could have easily stopped the crisis by now. Instead we gorged ourselves on SUVs and McMansions as politicians dithered and delayed."
The Greenhouse Gas Bulletin is one of several annual reports released ahead of United Nations climate conferences; this year, world leaders are scheduled to gather in Baku, Azerbaijan starting on November 11 for COP29. The Bulletin comes alongside other reports finding that national policies are not on track to reduce emissions in line with the Paris agreement temperature goals.
Last week, the U.N. Emissions Gap Report concluded that current policies put the world on course for as much as 3.1°C of warming. Also on Monday, the U.N. Framework Convention on Climate Change (UNFCCC) released its 2024 Nationally Determined Contributions (NDC) Synthesis Report, in which it assesses the commitments that different nations have made to reduce emissions under the Paris agreement.
It found that current NDCs would cut greenhouse gas emissions by 2.6% of 2019 levels by 2030, a far cry from the 43% needed to have a chance at limiting global heating to 1.5°C by 2100 and preventing ever-worsening climate impacts.
"Greenhouse gas pollution at these levels will guarantee a human and economic trainwreck for every country, without exception," U.N. Climate Change Executive Secretary Simon Stiell said in a statement of the current 2030 trajectory.
"Today's NDC Synthesis Report must be a turning point, ending the era of inadequacy and sparking a new age of acceleration, with much bolder new national climate plans from every country due next year," Stiell said. "The report's findings are stark but not surprising—current national climate plans fall miles short of what's needed to stop global heating from crippling every economy, and wrecking billions of lives and livelihoods across every country."
"By contrast," Stiell continued, "much bolder new national climate plans can not only avert climate chaos—done well, they can be transformational for people and prosperity in every nation."
Climate Defiance also called for renewed ambition.
"It is not too late," the group said. "There is still a small window of opportunity. Together, we will unite to stop our own demise. We will rise. We will defy all odds. There is no alternative."
"In the months leading up to COP29, Azerbaijani authorities have arrested dozens of prominent activists and media figures on baseless, serious criminal charges," notes a new report.
Human Rights Watch on Thursday revealed the host country agreement between the United Nations and Azerbaijan for next month's climate summit, on the heels of an HRW report exposing "the government's concerted efforts to decimate civil society and silence its critics."
COP29 is scheduled for November 11-22 in Baku. Although the agreement was signed in August by U.N. Framework Convention on Climate Change (UNFCCC) Executive Secretary Simon Stiell and Mukhtar Babayev, Azerbaijan's minister of ecology and natural resources, it was not made public until the U.S.-based human rights group obtained a copy.
Myrto Tilianaki, senior advocate for HRW's environment and human rights division, said it "is disappointing but not surprising" that the 20-page document "is replete with significant shortcomings and ambiguities on the protections for participants' rights."
As Tilianaki detailed in a Thursday dispatch on the HRW website:
For instance, the agreement states that while conference participants "shall enjoy immunity for legal process in respect of words spoken or written and any act performed by them," a separate clause requires them to respect Azerbaijani laws and not interfere in its "internal affairs."
There is no clarity in the agreement about what actions could constitute "interference" with Azerbaijan's "internal affairs," and whether Azerbaijan's laws apply in the U.N.-run conference zone. Given Azerbaijan's strict limitations on freedoms of expression and assembly, which violate international human rights law, participants' actions within the zone could be subject to reprisals outside the zone.
Tilianaki cited HRW and Freedom Now's Tuesday report, 'We Try to Stay Invisible': Azerbaijan's Escalating Crackdown on Critics and Civil Society, which states that the Caucasus country "has had a poor human rights record for many years, with the government regularly targeting those who play important watchdog roles in society, including human rights defenders, journalists, and independent civic activists."
"The government's vicious crackdown on critics and dissenting voices intensified over the last two years," the report emphasizes. "Among the methods the government uses to target these individuals are arrests and prosecutions on politically motivated, bogus criminal charges, as well as the arbitrary enforcement of highly restrictive laws regulating nongovernmental organizations. This system effectively excludes independent activists and media from lawful ways of carrying out their work, thereby pushing them to the margins of the law and heightening their vulnerability to retaliatory criminal prosecution."
"Azerbaijan is rich in oil and natural gas, depends heavily on fossil fuels for its state budget, and in 2024 is also hosting COP29, the United Nations Climate Conference," the 74-page document adds. "In the months leading up to COP29, Azerbaijani authorities have arrested dozens of prominent activists and media figures on baseless, serious criminal charges. The arrests are overwhelmingly linked to highly restrictive laws on nongovernmental organizations."
COP29 continues a trend in which a country hosts a summit that is supposed to bring world leaders together to tackle the climate emergency despite being incredibly involved with fossil fuels and repressive of critics—as Alex Galitsky of the Armenian National Committee of America wrote in a Thursday opinion piece for The Hill, "letting Azerbaijan host the U.N. climate conference is a sick joke."
Civil society groups, Tilianaki noted, "have repeatedly called for host country agreements to be made public for participants to have confidence that their rights will be protected when attending climate conferences," pointing out that Amnesty International obtained a copy of the last year's agreement only months after the United Arab Emirates hosted COP28.
As Amnesty explained in July, "In 2023 conclusions of the Bonn Climate Conference, parties to the UNFCCC highlighted that host countries should reaffirm their commitment to upholding the purposes and principles of the Charter of the United Nations and international human rights law before, during and after UNFCCC sessions and mandated events, and to ensure that participants can exercise those human rights without fear of intimidation and repercussions."
Although the COP28 agreement "contains some positive elements," Amnesty said, the 2023 conclusions "were not implemented" in the document. The group detailed various "elements of concern" and published the full text. It has also documented the history of human rights abuses in Azerbaijan.
Tilianaki declared Thursday that "it is regrettable that these agreements are shrouded in secrecy, and it shouldn't fall to civil society organizations to share them publicly."
"In the interests of transparency and accessibility, the UNFCCC should publish past, current, and future agreements on its website," she said. "More urgently, it should publicly call upon the Azerbaijani government to respect its human rights obligations and facilitate a rights-respecting climate conference."