Union of Concerned Scientists

Rigorous, independent science put to work to solve our planet’s most pressing problems.



CAMBRIDGE, MA – EIN 42535767  ucsusa.org

The Union of Concerned Scientists is a national nonprofit organization founded more than 50 years ago by scientists and students at the Massachusetts Institute of Technology.

Our mission: to use rigorous, independent science 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.

Today, we are a group of nearly 250 scientists, analysts, policy and communication experts dedicated to that purpose.

ur founders knew science and evidence-based decision making was critical to solving many of the biggest challenges facing humankind. To make progress we would need to work persistently in the face of often daunting odds. That’s just what we’ve done.

We combat climate change and seek to alleviate harm caused by the heat, sea level rise, and other consequences of runaway emissions,
We strive to develop sustainable ways to feed, power, and transport ourselves,
We work to reduce the existential threat of nuclear war,
We fight back when powerful corporations or special interests mislead the public on science, and
We ensure our solutions advance racial and economic equity.