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Union of Concerned Scientists
@ucs.org
The Union of Concerned Scientists puts rigorous, independent science to work to solve our planet's most pressing problems.

ucs.org
Yesterday, the Clean and Reliable Grid Affordability (CRGA) Act was signed into law 🎉. UCS’s James Gignac and other members of the Illinois Clean Jobs Coalition joined @govpritzker.illinois.gov to celebrate Illinois’ clean energy leadership.
January 9, 2026 at 10:03 PM
The authoritarian, violent, and anti-science actions of the Trump admin over the past week show clear contempt for democracy and the public good, endangering people in the US and around the world.

Congress must uphold its constitutional responsibility and hold the administration accountable.
January 9, 2026 at 4:25 PM
CRGA is law!🎉 Today, @govpritzker.illinois.gov signed the Clean and Reliable Grid Affordability (CRGA) Act into law, officially cementing Illinois as the state with the STRONGEST response yet to the rollback of federal climate protections.
January 9, 2026 at 12:00 AM
We are proud to celebrate our 2025 Science Defenders! Meet Neighbors for Environmental Justice (N4EJ), a group that has been working since 2018 to educate, advocate, and organize with the community to advance environmental justice on the southwest side of Chicago.
December 30, 2025 at 2:47 PM
It’s December, and we’re honoring UCS’s 2025 Science Defenders! Meet Dr. Yanelli Nunez, a senior scientist at PSE Healthy Energy, who provides data and analysis to help empower communities, amplify their voices, and work toward a healthier energy future.
December 26, 2025 at 2:39 PM
What’s the relationship between winter weather & climate change? It starts with the polar vortex. UCS's @marc-alessi.bsky.social breaks it down for you.

This holiday season, show some love to your local meteorologists and support science and scientific funding.
December 22, 2025 at 7:13 PM
It has not been an easy year for science, but there are bright spots worth celebrating. We are honoring our 2025 #ScienceDefenders, inspiring people using science to help communities and protect it from political or other interference.

Meet Katelyn Jetelina, founder of Your Local Epidemiologist.
December 18, 2025 at 5:28 PM
Yesterday, Rep. @joeneguse.bsky.social joined us via Zoom at #AGU25 to reject the Trump admin’s proposal to dismantle the Ntl. Center for Atmospheric Research (NCAR), one of the US’ leading weather & climate research institutions.
Urge Congress to halt this dangerous action: act.ucsusa.org/4oWtCwz
December 18, 2025 at 4:17 PM
The Trump admin intends to dismantle the National Science Foundation National Center for Atmospheric Research (NCAR), one of the US' leading weather and climate research institutions.

We must urge Congress to halt this dangerous action immediately.

🔗Take action: act.ucsusa.org/4oWtCwz
December 17, 2025 at 8:54 PM
The Arctic is warming nearly four times than the world average. Record loss of sea-ice, loss of snow cover, increase in precipitation, greening of the tundra and rusting of rivers are among the observed trends.
December 16, 2025 at 6:07 PM
Happening TODAY!

UCS invites you to join a powerful panel on perspectives, lessons, and leadership from fenceline communities in Louisiana, during #AGU25 week.

Join us for free food & drinks + a thoughtful conversation on science advocacy!

🗓️ Dec 16, 6pm CT.

🔗 Info + RSVP: act.ucsusa.org/3KOA5vK
December 16, 2025 at 4:28 PM
Applications are still open! The Science for Public Good Fund offers up to $1500 to support community-driven science advocacy projects. From workshops to local campaigns, you can help spark change. Apply here now: act.ucsusa.org/3KVR9Qo
December 15, 2025 at 4:15 AM
It’s been a rough year for science. But bright spots remain! We’re honoring our 2025 Science Defenders: people who use science to improve the world, taking a stand to protect science from political or other interference.

First up: Dr. Marc Alessi from the Weather & Climate Livestream team!
December 11, 2025 at 5:24 PM
The Trump administration has given free rein to some of the most polluting industries in the country. We created an interactive map showing 546 industrial sites across the US and Puerto Rico deemed eligible for exemptions from their Clean Air Act requirements. #DirtyDeeds (🧵)
December 10, 2025 at 5:19 PM
A federal court ruled that the Trump administration must release records tied to the secretly formed Climate Working Group (CWG), which produced a widely discredited report now central to attacks on U.S. climate efforts.

Read UCS & @envdefensefund.bsky.social statement:

🔗 act.ucsusa.org/4rOlZej
December 9, 2025 at 10:07 PM
Key US climate change indicators were also scrubbed from EPA webpages, including data and maps on changes in temperature, drought, and heavy precipitation over the last few decades. These webpages can be found on Wayback Machine:

web.archive.org/web/20251004...
December 9, 2025 at 8:23 PM
UCS, @weact4ej.bsky.social and Louisiana community leaders invite you to join a powerful toxic tour exploring the realities of environmental injustice in the Gulf South.

Join this IN-PERSON event on Sunday, December 14, 1pm CT.

🔗Info + RSVP: act.ucsusa.org/4pqlo13
December 8, 2025 at 5:17 PM
We won’t let science be silenced – ACT NOW. UCS needs urgent support to continue leading the charge to defend science, our planet, and our communities.

💝Give before 11:59 pm TONIGHT.

Donate: act.ucsusa.org/Giving2025

#GivingTuesday
December 3, 2025 at 9:01 PM
Hey Michiganders! We hope to see you next Wednesday, December 10, for a community solar-focused lobby day in Lansing!

#CommunitySolar #CleanEnergyForAll

Sign up here: act.ucsusa.org/4rzFg3b
December 3, 2025 at 6:48 PM
🔬✨Science advocacy takes many forms: a local talk, event on campus, a toolkit, collaboration with a community group, and more! Let us help fund your advocacy efforts.

Apply for up to $1500 here:

🔗 act.ucsusa.org/4iAEiiT
December 3, 2025 at 5:28 PM
There are just a few hours left of #GivingTuesday! It's up to us to protect science and democracy to build the future we deserve. Join forces with other science advocates and multiply your impact.⁠

💝Give before midnight.

Donate: act.ucsusa.org/Giving2025
December 2, 2025 at 10:15 PM
It’s #GivingTuesday! UCS needs urgent support to continue leading the charge to defend science, our planet, and our communities. With 500+ documented attacks on science this year alone, this work is more important than ever.

💝Give before midnight.

Donate: act.ucsusa.org/Giving2025
December 2, 2025 at 5:01 PM
This #GivingTuesday, UCS needs urgent support to continue leading the charge to defend science, our planet, and our communities. Make a gift before midnight on December 2nd, and your gift will count toward a 3X match campaign, up to $250,000.

Donate: act.ucsusa.org/Giving2025
December 1, 2025 at 7:31 PM
Strong employee experience practices boost satisfaction, prevent burnout and build a motivated, equity-centered workforce. Join @green2-0.bsky.social and leaders including UCS’s president @gretchentg.bsky.social to discuss strengthening our sector.

Register: us02web.zoom.us/webinar/regi...
December 1, 2025 at 3:33 PM
See more of award-winning photographer Daniel Beltrá’s work: www.danielbeltra.com and on Instagram: @danielbeltraphoto
November 26, 2025 at 2:52 PM