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Climate
Report
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Decades of Deceit

Why the case against the major fossil fuel companies for fraud and climate damages is so strong.

Climate Change

Climate change is one of the most devastating problems humanity has ever faced—and the clock is running out.

Learn more about Climate
  • Impacts
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Call on Congress to invest in affordable climate resilient housing.

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Energy
Report
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Keeping Everyone's Lights On

The grid today is woefully unprepared to meet our current climate reality.

Energy

The energy choices we make today could make or break our ability to fight climate change.

Learn more about Energy
  • Renewable Energy
  • Nuclear Power
  • Fossil Fuels
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Demand power plant outage information be made public.

Act Now
Transportation
Report
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Harnessing the Power of Electric Vehicles

UCS research shows that vehicle-grid integration (VGI) enables electric system savings, ranging from $1.8 billion - $11.7 billion per year in 2045.

Transportation

Our transportation system is outdated and broken—and it needs to change.

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Tell Congress we need electric vehicle infrastructure nationwide.

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Food
Activist Resource
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Guiding California's Land Transitions Toward Justice and Equity

Analyses of the current challenges and solutions in California's cropland transition.

Food and Farms

The US food system should be providing healthy, sustainable food for everyone. Why isn’t it?

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  • Sustainable Agriculture
  • Healthy Food
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The farm bill must center communities, not corporations.

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Nuclear Weapons
Report
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Plutonium Pit Production

The US plan to build new plutonium pits for nuclear weapons is unnecessary, risky, and dangerous to the health of workers and communities.

Nuclear Weapons

They’re the most dangerous invention the world has ever seen. Can we prevent them from being used again?

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  • Worldwide
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Tell Congress: No more nuclear weapons testing.

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Science & Democracy
Report
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Access Denied

The Trump administration is evading legal requirements as it attacks a wide range of public health, environmental, and safety rules.

Science and Democracy

Democracy and science can be powerful partners for the public good—and both are under attack.

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Help strengthen scientific integrity at federal agencies.

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Press Release
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September 30, 2025

Trump Administration Slashes Accountability, Boosts Bailouts for Coal Industry

Press Release
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September 29, 2025

New UCS Analysis Reveals Billions of Dollars in Unreported Data Center Costs Passed onto PJM Customers

Press Release
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September 22, 2025

UCS Submits Comments Opposing EPA’s Proposal to Rescind the Endangerment Finding, Vehicle Standards

Press Release
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September 19, 2025

Newsom Signs Improved Cap-and-Invest Program, New Energy Affordability Initiatives into Law

Press Release
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September 18, 2025

UCS Experts at New York City Climate Week 2025, Available for Interviews

Press Release
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September 17, 2025

Court Rules Secret Group That Wrote “Climate Science Report” is Not Exempt from Federal Law

Report
Aerial of the San Joaquin River in Fresno, CA taken by drone

Working with Nature to Protect California's Agricultural Regions

California’s agricultural regions face many interconnected challenges. Implementing nature-based solutions will address climate and water issues, provide public health, environmental and community benefits all while decreasing taxpayer costs.
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Tell Congress: Don't allow nuclear weapons regulatory process loopholes.

Take Action
Press Release
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September 16, 2025

Over 1,000 Scientists Call on EPA to Do Its Job: Heed Best Available Climate Science to Protect Public from Global Warming Pollution

Press Release
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September 13, 2025

California Reauthorizes Improved Cap-and-Invest Program, Advances New Energy Affordability Initiatives

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