Ivan Alvarado/Reuters
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
Activist Resource
What You Can Do about Disinformation
Know how to identify it, counter it, and stop it in its tracks.
Report
On the Road to 100 Percent Renewables
States can reliably meet 100 percent of their electricity needs with renewable energy.
Podcast
US and China’s Nuclear Policy
Dr. Gregory Kulacki discusses China’s nuclear weapons strategy and the Russian war in Ukraine.
Activist Resource
Protect the Vote in November 2022
Learn how you can defend our democracy against those who seek to undermine it.
How we work
Accomplishments
Created a Roadmap for Clean Trucking
After UCS worked with partners on analysis and testimony highlighting the problem of freight truck pollution, and the benefits of clean trucks, Massachusetts, New Jersey, and New York have adopted a set of rules to curb pollution from trucks.