White semi truck on highway with sunrise

Secured Fuel Efficiency Standards for Big Trucks

UCS analysis informed the development of heavy-duty fuel economy standards.

Expanded Clean Energy in the Midwest

UCS worked in Illinois to successfully pass a comprehensive energy bill.

Forced ExxonMobil to Acknowledge Climate Change in its Business Plans

A multi-year effort by UCS and activist investors to keep pressure on ExxonMobil.
North Korea map with red push pin

Provided Crucial, Independent Analysis of the North Korean Missile Program

UCS offered trusted, independent analysis of North Korean nuclear capabilities.
A waterfront property for sale sign submerged in flood waters

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.
Three individuals with stamp withdrawn in yellow

Blocked Anti-Science Nominees from the Trump Administration

UCS mobilized our half-million members and supporters.

Pushed California toward 100 Percent Clean Energy

After many years of UCS providing visionary technical expertise to prove it was possible, California passed a bill requiring that 100 percent of its electricity come from clean, renewable sources by 2045.
Subscribe to