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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
Feature
The Climate Action Button
Clicking the button won't solve the climate crisis. But it'll help.
Video
The Power Grid Is a Top Climate Solution. But What Is It?
The power grid makes modern life possible—but it’s also holding us back.
Explainer
Tactical Nuclear Weapons
Also called nonstrategic nuclear weapons, they're designed for battlefield use and have a shorter range than other nuclear weapons.
Activist Resource
What You Can Do about Disinformation
Know how to identify it, counter it, and stop it in its tracks.
How we work
Accomplishments
NREL
UCS Research, Advocacy Inform Game-Changing U.S. Climate Law
After decades of advocacy for a national plan to address climate change, UCS-backed legislation that invests billions to reduce global warming emissions is now law. This opportunity is a stepping stone to more progress for a climate-safe future for all.