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Press Release

UCS Announces New President
Johanna Chao Kreilick, an advocate for social change and justice, will serve as our new president.
Explainer

COVID-19 Vaccine FAQ
As COVID-19 vaccines become more widely available, it's important to have access to reliable scientific information. Here are answers to the most common questions.
Open letter

Scientists & Experts Want Climate Action
In this open letter signed by prominent scientists, we highlight five important steps Biden can take on climate change.
Report

"Advanced" Isn't Always Better
We studied the most prominent “advanced” nuclear reactor designs. Unfortunately, few are safer or more secure than current generation reactors.