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7 people who gave up on civilization to live in the wild

By: Bryan Nelson on April 16, 2010, 1:06 p.m.
Timothy Treadwell

Photo: Courtesy of 'Grizzly Man'

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Timothy Treadwell

Tim Treadwell was an environmentalist, amateur naturalist, eco-warrior and documentary filmmaker who lived among the grizzly bears of Katmai National Park in Alaska. Despite living among the bears without any protection for 13 summers in a row, by the end of the last summer his luck had finally run out as he and his girlfriend, Amie Huguenard, were killed and eaten by a bear. Though some found his idealism naive, Treadwell fought to protect the habitat he loved through his activism and filmmaking. His story was immortalized in the documentary film "Grizzly Man."