50 Years of Science and Action

We just turned 50 years old—and we're celebrating our achievements >

Killer Heat

New analysis shows a dangerously hot future for locations across the US.

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Stand Up for Science

UCS is closely monitoring the Trump administration—and mobilizing to defend science.
The Real Record

Half-truths, cherry-picked data, and fabrications have defined how this Administration talks about its environmental record.

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Latest News

Amazon Deforestation and Brazilian President Bolsonaro’s Attack on Science

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The Scientific Integrity Act and the Importance of Storytelling in Science Communication

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Now’s the Time for California to Start Planning for Self-Driving Cars

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More Charging Infrastructure Coming for Electric Trucks and Buses in California

Blog Post

Colorado Adopts New Zero-Emission Vehicle Policy

Press Release

As Global Warming Increases, Is There an Upper Limit to How Much Additional Water Vapor The Atmosphere Can Hold?

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Science Network

Our network of more than 24,000 technical experts advancing science-based solutions for a healthy planet and a safer world.

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Advised by UCS, Maine Signs Major Renewable Energy Bills

With UCS expertise and advocacy—including peer-reviewing a cost-benefit study, providing testimony, and rallying supporters—Maine passed several bills setting clean energy goals that rank among the nation’s most ambitious.

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Your gift advances science-based solutions for a sustainable future. See our 2018 Annual Report.

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Union of Concerned Scientists

50 Years of Science and Action

Killer Heat

Stand Up for Science

The Real Record

Latest News

Amazon Deforestation and Brazilian President Bolsonaro’s Attack on Science

The Scientific Integrity Act and the Importance of Storytelling in Science Communication

Now’s the Time for California to Start Planning for Self-Driving Cars

More Charging Infrastructure Coming for Electric Trucks and Buses in California

Colorado Adopts New Zero-Emission Vehicle Policy

As Global Warming Increases, Is There an Upper Limit to How Much Additional Water Vapor The Atmosphere Can Hold?

Stay Informed via email from UCS

We depend on your support

Science Network

Advised by UCS, Maine Signs Major Renewable Energy Bills

Your Support at Work

Science for a healthy planet and safer world

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50 Years of Science and Action

Killer Heat

Stand Up for Science

The Real Record

Latest News

Amazon Deforestation and Brazilian President Bolsonaro’s Attack on Science

The Scientific Integrity Act and the Importance of Storytelling in Science Communication

Now’s the Time for California to Start Planning for Self-Driving Cars

More Charging Infrastructure Coming for Electric Trucks and Buses in California

Colorado Adopts New Zero-Emission Vehicle Policy

As Global Warming Increases, Is There an Upper Limit to How Much Additional Water Vapor The Atmosphere Can Hold?

Stay Informed via email from UCS

We depend on your support

Science Network

Meet our Experts

Shuchi Talati

Fellow (Solar Geoengineering Research, Governance and Public Engagement)

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