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10 intriguing environmentalists

By: Sidney Stevens on Oct. 16, 2009, 11:23 p.m.
Julia Butterfly Hill

Photo: GSMattingly/Flickr

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Julia Butterfly Hill

Tree-sitter extraordinaire, Hill lived for two years in the canopy of an ancient Redwood tree she affectionately named Luna to prevent it from being logged. After climbing down 10 years ago, she wrote a book called The Legacy of Luna and has continued redefining eco-activism ever since. From inspirational speaking to founding the Engage Network to a possible biopic (starring Rachel Weisz), civil disobedience will never be the same.