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Science for people and the planet.
The Union of Concerned Scientists is a member-supported nonprofit that’s fighting for a safer and healthier world.
Our work
Report
Keeping Everyone's Lights On
The grid today is woefully unprepared to meet our current climate reality.
Blog series
Danger Season
As the climate crisis worsens, the months of May through October are becoming "Danger Season."
Report
Decades of Deceit
Why the case against the major fossil fuel companies for fraud and climate damages is so strong.
Blog Series
Scientists Respond to the Trump Administration
Our experts and analysts weigh in on the latest developments from the White House.
How we work
Accomplishments
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UCS Science, Advocacy Help Secure Clean Energy in Maine
A new Maine law requires the state’s power to come from 100% carbon-free electricity sources by 2040, saving consumers money. UCS staff rallied support for the law by testifying at hearings, promoting a lobby day, and working with local partners.