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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
The Supreme Court’s Devastating Impacts on the EPA
An energy and policy expert explains the WV v. EPA court case and its potentially devastating effects.
Report
Economics of Gas-Fired Power
Many fossil fuel power plants across the country are no longer economic to operate year-round.
Blog series
Danger Season
As the climate crisis worsens, the months of May through October are becoming "Danger Season."
Video
Why Climate Resilience Is Like a Tiger Chase
Everyone knows we need to cut emissions. But we need to start adapting too.
How we work
Accomplishments
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Clean Truck Victory in Connecticut
Seizing the opportunity to clean up transportation in the state, UCS created an analysis on the benefits of cleaner trucks and cars and advocated with coalition partners to pass the Connecticut Clean Air Act—now law.