Anthony Eyring/UCS
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
Report
New England’s Offshore Wind Solution
The New England winter is no match for what offshore wind offers.
Report
Data Center Power Play
Unmitigated data center growth puts the public at risk of higher utility bills and public health costs.
Video
UCS: What We Do
Breathtaking imagery from photographer Daniel Beltrá showcases the range of issues that UCS works on.
Report
Nuclear Weapons Without Limits?
Once the New START treaty expires in February 2026, there will be no limits on the number of strategic nuclear weapons the US and Russia can deploy.
How we work
Accomplishments
Trevor Tejeda-Gervais
Cleaner, More Affordable Power for Illinois
UCS championed legislation that will help Illinois achieve its clean electricity goals and boost energy affordability amid federal attacks on clean energy.