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  1. Back from the Brink: Sarah Stock at TEDxYosemite

    Contributor(s):: Sarah Stock

    We live at a time when the rate of extinction is thought to be 1,000 times higher than normal. In this hopeful talk, Sarah Stock describes how the dire fate of two animals in Yosemite was reversed, showing what is possible when we boldly address past mistakes.Sarah Stock is a Wildlife Biologist...