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500,000 = STRONG. + YOU = STRONGER.

When you support our work for endangered species and wild places, you give us power in numbers. Growing numbers: more than 500,000 members and online activists — and still counting. Together we have the clout to force the sea changes in policy needed to stop global warming, protect our air and water, and secure a future for plants and animals hovering on the brink of extinction.

VIDEO: The Center for Biological Diversity — An Overview by the Giving Library

Watch Assistant Executive Director Sarah Bergman tell you all about our work to protect endangered species and how your membership support makes a difference. Check out the Q&A session at the end for details on why we're the nation's leading conservation group protecting imperiled plants and animals.

Read about what Edward Humes calls our "unparalleled success rate" in the groundbreaking book Eco Barons.

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Photo by Bryant Austin, California Fish and Game

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