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The Union of Concerned Scientists (UCS) is an independent nonprofit that puts rigorous, independent science into action, developing solutions and advocating for a healthy, safe, and just future. We envision a peaceful, healthy, and just world where science serves people and the planet by guiding policy decisions, reducing risks, and improving lives. For over five decades, we have been working as scientists, engineers, economists, advocates, and everyday people to create and advocate for innovative, practical solutions to some of our planet’s most pressing problems—from combating global warming and developing sustainable ways to feed, power, and transport ourselves, to fighting disinformation, advancing racial equity, and reducing the threat of nuclear war. Values informing our work include: Science in the service of people and the planet, Justice and Equity for people of all races and incomes—now, and for future generations, Courage to take principled, science-based stands in the public arena, Integrity to always examine evidence critically, openly, and honestly, Democracy to promote a voice for all in government decisions, and Action inspiring and mobilizing people to build a healthier, safer, and more just world.