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
ucs.org
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.
Congress must uphold its constitutional responsibility and hold the administration accountable.
January 9, 2026 at 4:25 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.
Congress must uphold its constitutional responsibility and hold the administration accountable.
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.
This holiday season, show some love to your local meteorologists and support science and scientific funding.
December 22, 2025 at 7:13 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.
This holiday season, show some love to your local meteorologists and support science and scientific funding.
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
We must urge Congress to halt this dangerous action immediately.
🔗Take action: act.ucsusa.org/4oWtCwz
December 17, 2025 at 8:54 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
We must urge Congress to halt this dangerous action immediately.
🔗Take action: act.ucsusa.org/4oWtCwz
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
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 (🧵)
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
Donate: act.ucsusa.org/Giving2025
December 1, 2025 at 7:31 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
Donate: act.ucsusa.org/Giving2025