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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
Video
Sea level rise, explained by kids
Young people have a lot to say about how global warming is changing the world.
Report
Freedom to Move
We need a transportation system that centers the communities it’s meant to serve.
Activist Resource
An Activist's Guide to Radiation and Human Health
Essential readings for understanding the world of radiation, radioactive materials, and the threats they pose to human health
Report
Race and Representation in Battleground Counties
Explore the racial disparities in voter turnout and ballot rejection rates for 11 counties that will likely be pivotal in the outcome of the 2024 election.
How we work
Accomplishments
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New Federal Rules to Modernize US Power Grid Cite UCS
Citing UCS research 33 times in their final rule, the Federal Energy Regulatory Commission approved guidelines to improve outdated electricity grids, allowing for more renewable energy and requiring grid operators to plan for climate change.