Thanks to UCS organizing, 56 scientific societies representing more than 100,000 scientists sent a letter to Congress, calling for "immediate action to protect and restore life-saving and essential scientific research."

Following sustained pressure from UCS and others, the Trump Administration backed down from threats against the National Oceanic and Atmospheric Administration (NOAA), keeping regional climate centers open.

Following direct work between UCS scientists and countries on the font lines of the climate crisis, the InterAmerican Court of Human Rights issued the opinion that climate inaction is a violation of international law.

Three new UCS-supported laws will save Golden State ratepayers money and increase the amount of clean energy flowing to California’s electric grid, paying off years of analysis and advocacy from UCS Western States staff.

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.

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.

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.

In a move that will boost reliable, inexpensive clean energy and jobs in the region—that UCS has supported in state legislatures and with utility regulators for years—a Midwestern utility has voted to invest billions in its transmission system.

After years of education and advocacy from UCS and others, California became the first state to require that EVs offer bidirectional charging capability—a forward-thinking solution for lower bills, grid resilience, and clean back-up power.

A new MA law—informed by UCS analysis and advocacy, including a coalition of environmental justice groups that has convened for years—will speed the local transition to clean energy, and address the unfair burdens of polluting energy infrastructure.