Table of Contents
We’ve combined science and advocacy for more than fifty years. The results speak for themselves.
Assembled below is a list of recent UCS-driven wins and major milestones, chronicling the many ways we act at the intersection of science and policy. Each success is made possible through the power of our staff, Science Network, activists, and committed members.
Recent wins

S. Young/UCS
Historic Win for Survivors of Radiation Exposure
For years, UCS has worked with communities exposed to radiation from US nuclear weapons activities for justice and compensation. Legislation providing compensation lapsed in 2024; after much advocacy, Congress renewed and expanded it to cover more people.

Cavan Images/Getty Images
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.

Clemens van Lay/Unsplash
Nuclear Security Agency Responds To UCS Scientist's Concerns
After a UCS scientist co-authored an article on the potential for a certain kind of in demand uranium fuel to be used to make nuclear weapons, US nuclear security agency NNSA agreed to sponsor a study on this risk.
Major accomplishments

Blocked Anti-Science Nominees from the Trump Administration
UCS mobilized our half-million members and supporters.

Showcased the Threat to Coastal Properties from Climate-Driven Sea Level Rise
Using the latest available real estate data, a UCS analysis sent a wake-up call throughout the real estate and insurance markets.

Provided Crucial, Independent Analysis of the North Korean Missile Program
UCS offered trusted, independent analysis of North Korean nuclear capabilities.

Forced ExxonMobil to Acknowledge Climate Change in its Business Plans
A multi-year effort by UCS and activist investors to keep pressure on ExxonMobil.

Expanded Clean Energy in the Midwest
UCS worked in Illinois to successfully pass a comprehensive energy bill.

Secured Fuel Efficiency Standards for Big Trucks
UCS analysis informed the development of heavy-duty fuel economy standards.

Revealed Climate Deception at ExxonMobil
A UCS report documented that ExxonMobil and other oil and gas companies knew about the dangers their products caused to the climate.

UCS Fully Divests From Fossil Fuel Interests
After reevaluating our investment portfolio, we uncovered small fossil fuel holdings within "sustainability funds"—and immediately divested.

Spotlighted How Restructuring US Food Policy Could Save Trillions
A UCS video and analysis, demonstrated the health and environmental benefits of restructuring our food system.

Exposed Misinformation and Media Bias
A UCS analysis exposed extremely misleading climate coverage.