Our pledge to members

83% of funds go directly to programs


We are pleased that UCS continues to receive recommendations from the United States’ premier charity rating agencies, Charity Navigator, the Better Business Bureau, and the American Institute of Philanthropy. Your investment in the Union of Concerned Scientists is all the more valuable, because to preserve our integrity we do not accept corporate or government grants. Your gift is building a healthy planet and a safer world. UCS is a 501c3 nonprofit organization and all gifts are tax deductible.


Defend science today > 

Why Become a Member?