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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
Explainer
Voting Rights and Environmental Justice
Disenfranchisement through voter suppression and gerrymandering prevents overburdened communities from fighting back against threats to their well-being.
Feature
The Climate Action Button
Clicking the button won't solve the climate crisis. But it'll help.
Explainer
Does Cold Weather Disprove Climate Change?
It most certainly does not—but it does change the intensity of the heaviest storms.
Activist Resource
Team-Based Organizing Initiative
This year-long leadership development opportunity will train leaders in key advocacy skills—and help create change.
How we work
Accomplishments
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UCS Successfully Advocates for US Loss and Damage Financing
At COP27 this year, countries agreed for the first time to finance a fund compensating vulnerable nations for climate-related loss and damage—a measure UCS advocated for via a joint letter from 143 organizations, and 10,000+ emails from UCS supporters.