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A view of a burned gas station in ruins in Altadena, California, following wildfires that swept through the city in January 2025.

Every several years for the past 25 years, the federal government has published a comprehensive look at the way climate change is affecting the country. States, local governments, businesses, farmers, and many others use this National Climate Assessment to prepare for rising temperatures, more bouts of extreme weather, and worsening disasters such as wildfires.

On Monday, however, the Trump administration told all of the more than 400 volunteer scientists and experts working on the next assessment that it was releasing them from their roles. A brief memo said the scope of the report was being “reevaluated” within the context of the Congressional legislation that mandates it.

The move throws the National Climate Assessment, whose sixth iteration is supposed to be released in late 2027 or early 2028, into even deeper uncertainty. Earlier this month, the Trump administration canceled funding for the U.S. Global Change Research Program, the White House office that produces the report and helps coordinate research across more than a dozen federal agencies.

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