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We use science to make change happen.
The Union of Concerned Scientists is a member-supported nonprofit that’s fighting for a safer and healthier world.
Our work
Podcast
Hurricane Season 2021
Senior Climate Scientist Astrid Caldas elaborates on Ida—and the many other deadly and damaging 2021 storms made worse by climate change.
Video
Ending Sole Authority
In the United States, the sole authority to order the use of nuclear weapons belongs to the president.
Report
Environmental Racism in the Heartland
A legacy of systemic racial discrimination has left communities in the Kansas City area disproportionately exposed to health-damaging pollutants.
Feature
50 Years of Science and Action
Since our founding in 1969 we've helped address some of the world’s most pressing problems.
How we work
Accomplishments
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Helped Pass Climate and Equitable Jobs Act in Illinois
The new law—which UCS tirelessly advocated for with the Illinois Clean Jobs Coalition—sets a goal of 100% clean energy, while prioritizing environmental justice communities for pollution reductions.