Trump administration halts U.S. role in global climate assessment

The Trump administration has withdrawn U.S. scientists from a key United Nations climate change assessment, further distancing the country from international climate efforts.

Valerie Volcovici reports for Reuters.


In short:

  • The U.S. has stopped participation in an Intergovernmental Panel on Climate Change (IPCC) working group, affecting federal scientists from the National Oceanic and Atmospheric Administration and the U.S. Global Change Research Program.
  • This decision means the U.S. will not be represented at an upcoming IPCC plenary meeting in China, where major decisions about the next global climate report will be made.
  • The move aligns with Trump’s broader climate policy, including withdrawing from the Paris Agreement and cutting international climate funding.

Key quote:

"The power of the IPCC is that governments, businesses, and global institutions can operate with shared conclusions. The U.S. being completely removed from that process is concerning."

— Delta Merner, Union of Concerned Scientists

Why this matters:

If the U.S. were to step back from its involvement in the IPCC — whether through reduced funding, diminished scientific contributions, or political disengagement — the consequences could ripple across the international climate policy landscape. Cooperation on climate action might falter, and momentum toward emissions reductions could slow. The absence of U.S. support could be particularly damaging for scientists in developing nations, who often depend on grants and resources from high-income countries to conduct research and implement adaptation strategies. At a time when climate impacts are accelerating — ranging from devastating wildfires to intensifying hurricanes — any weakening of global collaboration could make it even more difficult to address the crisis.

From 2021: The new IPCC report is dire. Does anyone care?

A woman in a snowy lanscape wearing a hat and scarf bundled against the cold weather
Credit: Hans/Unsplash+

Trump’s Energy Secretary says ‘cold is larger killer’ during record European heatwave

Chris Wright, a former oil and gas executive, urged the UK to embrace fossil fuels at right-wing Alliance for Responsible Citizenship conference in London.
A view of umbrellas on a sandy beach with buildings in the background

'Flesh-eating' bacteria threat spreads on Europe's beaches as seas warm

Climate change is spreading Vibrio “flesh-eating” bacteria, forcing beach closures in Spain and alarming authorities, especially in the Mediterranean.

Woman shielding her eyes from sun with summer heat wave in the city background.
Credit: Tom Wang/BigStock Photo ID: 406607645

European heat wave is not normal summer weather

Human-induced climate change has intensified temperatures, making this year's record heat wave up to 4 degrees Celsius hotter.
Nightime street traffic on the Chicago Loop

Base Power brings cheap batteries to residents in power-starved PJM

The unicorn startup launched its first move outside its home state of Texas, pitching low-cost energy and backup power in northern Illinois.
A closeup view of a gas tower flaring flames into the sky

Gas flaring rose for a third straight year, World Bank reports

A World Bank report found global flaring rose for a third straight year in 2025, spewing air pollution linked to preterm births and respiratory diseases.
Oil pump silhouette against Colombia flag.
Credit: Ink Drop/BigStock Photo ID: 454377881

Colombian election result may reshape the Amazon rainforest’s future

Abelardo de la Espriella, set to be Colombia’s president, has intensified debate over the future of the Amazon.
Duck and seven ducklings swimming through green algae tainted water

Public understanding of harmful algal blooms still low, survey finds

Most Australians remain uncertain about the cause of harmful algal blooms and are more worried about disasters such as bushfires and flooding.
From our Newsroom
Multiple Houston-area oil and gas facilities that have violated pollution laws are seeking permit renewals

Multiple Houston-area oil and gas facilities that have violated pollution laws are seeking permit renewals

One facility has emitted cancer-causing chemicals into waterways at levels up to 520% higher than legal limits.

Regulators are underestimating health impacts from air pollution: Study

Regulators are underestimating health impacts from air pollution: Study

"The reality is, we are not exposed to one chemical at a time.”

Pennsylvania governor Josh Shapiro speaks with the state flag and American flag behind him.

Two years into his term, has Gov. Shapiro kept his promises to regulate Pennsylvania’s fracking industry?

A new report assesses the administration’s progress and makes new recommendations

silhouette of people holding hands by a lake at sunset

An open letter from EPA staff to the American public

“We cannot stand by and allow this to happen. We need to hold this administration accountable.”

wildfire retardants being sprayed by plane

New evidence links heavy metal pollution with wildfire retardants

“The chemical black box” that blankets wildfire-impacted areas is increasingly under scrutiny.

Stay informed: sign up for The Daily Climate newsletter
Top news on climate impacts, solutions, politics, drivers. Delivered to your inbox week days.