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For 60 years, one man devoted his life to understanding and documenting the natural world.
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Airs Wednesday, December 11, 2013 at 8:00 p.m. ET/PT. Check your local listings.
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Airs Wednesday, June 11, 2014 at 8:00 p.m. ET/PT. Check your local listings.
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Airs Wednesday, June 12, 2013 at 8:00 p.m. ET/PT. Check your local listings.