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Science in service of people and the planet.
The Union of Concerned Scientists is a member-supported nonprofit that’s fighting for a safer and healthier world.
Our work
Report
Data Centers in California
What will the impacts of data centers be on the state’s electricity system and its ratepayers?
Feature
UCS vs Anti-Science Actions
We're suing the Trump administration on a wide range of issues—and winning.
Feature
Attacks on Science Tracker
This tool tracks attacks on science from the second Trump administration.
Video
The Town That Chose to Thrive
Industrial agriculture has harmed local soil, water, and air, and the health of the people who call San Joaquin Valley, California home.
How we work
Accomplishments
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UCS Influence, Advocacy, Lead to Colorado Battery Recycling Win
UCS helped draft Colorado legislation for the strongest EV battery recycling policy in the US and used local media to make the case for its passage; the bill, which will extend the useful life of EV batteries and keep them out of landfills, is now law.