🏳️Union of Concerned Scientists
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The Union of Concerned Scientists puts rigorous, independent science to work to solve our planet's most pressing problems. Joining with people across the country, we combine technical analysis and effective advocacy to create innovative, practical solutions for a healthy, safe, and sustainable future.
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Science for people and the planet.
==================================
The Union of Concerned Scientists is a member-supported nonprofit that’s fighting for a safer and healthier world.
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### [Tell Congress: Stop Trump's illegal and unconstitutional power grab.](https://secure.ucsusa.org/a/2025-stop-trumps-illegal-unconstitutional-power-grab)
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Our work
--------
[
OPEN LETTER
](/node/15814)
### [An Open Letter on NOAA](/node/15814)
More than 2,500 scientists call on Congress and the Trump administration to protect NOAA.
[
Blog Series
](/node/15774)
### [Scientists Respond to the Trump Administration](/node/15774)
Our experts and analysts weigh in on the latest developments from the White House.
[
Video
](/resources/how-counter-disinformation)
### [How to Counter Disinformation](/resources/how-counter-disinformation)
Learn how to spot disinformation and stop it in its tracks.
[
Activist Resource
](/resources/resources-federal-scientists)
### [Resources for Federal Scientists](/resources/resources-federal-scientists)
Are you a federal scientist, contractor, or federal worker? Here are resources to have on hand during the Trump administration.
[See all reports & multimedia](/resources)
From our blog
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[](https://blog.ucs.org/dave-cooke/the-user-pay-myth-we-all-pay-for-our-roads-not-just-drivers/)March 13, 2025
### [The User-Pay Myth: We ALL Pay for Our Roads, Not Just Drivers](https://blog.ucs.org/dave-cooke/the-user-pay-myth-we-all-pay-for-our-roads-not-just-drivers/)
**User ID: 13** job title
[](https://blog.ucs.org/karen-perry-stillerman/what-does-science-have-to-do-with-the-price-of-eggs/)March 13, 2025
### [What Does Science Have to Do with the Price of Eggs?](https://blog.ucs.org/karen-perry-stillerman/what-does-science-have-to-do-with-the-price-of-eggs/)
**User ID: 19** job title
[](https://blog.ucs.org/erika-spanger-siegfried/whose-house-our-house-why-we-must-fight-the-theft-and-butchering-of-our-federal-agencies/)March 13, 2025
### [Whose House? Our House. Why We Must Fight the Theft and Butchering of Our Federal Agencies](https://blog.ucs.org/erika-spanger-siegfried/whose-house-our-house-why-we-must-fight-the-theft-and-butchering-of-our-federal-agencies/)
**User ID: 72** job title
[Read more](https://blog.ucsusa.org)
We are experts and everyday people, fighting for change together.
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How we work
-----------
### _Research_ the world’s most pressing issues
### _Fight misinformation_ and defend science
### _Communicate_ with the media, the public, and decisionmakers
### _Mobilize_ our 500,000 supporters to advocate for change
[Learn more](/about)
Accomplishments
---------------
Clemens van Lay/Unsplash
January 2025
### 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.
[Read press release](https://www.ucsusa.org/about/news/analysis-published-science-finds-high-assay-low-enriched-uranium-fuel-be-produced-small)
[See all](/about/accomplishments)
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