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Solar Power & Self-Determination in Puerto Rico
When Hurricane Maria knocked out power in Puerto Rico, a community radio station in Adjuntas kept playing, providing a critical communication lifeline.
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4 Signs of Climate Change, Explained
Here are 4 clear-cut climate change signals, explained using the latest science: hotter temperatures, more extreme weather, rising seas, and a hotter, more acidic ocean.
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Hiroshima & Nagasaki: Never Again
Join hibakusha, Atomic Veterans, and a global community in calling for a safer world, free from new nuclear weapons.
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How Offshore Wind Lowers Prices
A dispatch curve demonstrates how renewable sources of energy, like offshore wind, can lower electricity prices by avoiding fuel costs.
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When Renewables Passed 25%
It has taken more than 2 decades of advocacy and hard work, but solar and wind are now breaking records, and are often the cheapest source of electricity available.
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Nuclear Weapons Facts You Definitely DON'T Want to Know
How secure are nuclear weapons against accidental, mistaken, and unauthorized nuclear explosions and missile launches?
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The Town That Chose to Thrive
Industrial agriculture has harmed local soil, water, and air, and the health of the people who call San Joaquin Valley, California home.
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Your EV Can Help Keep the Lights On
Find out how Electric vehicles (EVs) equipped with bi-directional charging are a bright idea for a healthy California.
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Announcing our 2025 Annual Report
Thanks to your support, UCS has been monitoring and responding to unprecedented attacks on science. We're seeing success.
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UCS: What We Do
Breathtaking imagery from photographer Daniel Beltrá showcases the range of issues that UCS works on.
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Investing in Transportation Choices
It's time we invest in transportation choices for a clean, prosperous, and just future.
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Clean Trucks Are Ready for Work
Deployment of zero emissions trucks will save lives and money.