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Sagan briefly describes the course of evolution from the beginning of life to the present. For more Sagan videos, go to http://www.yoism.org/?q=node/62 For more video explorations of evolution and its antithesis (i.e., Creationism and Intelligent Design), featuring Lewis Black, Jon Stewart, Stephen Colbert, Ed Helm, Lewis Black, Sam Donaldson, Cokie Roberts, Bill Maher, George Stephanopoulos, Pat Robertson, Richard Dawkins, The Family Guy, The Simpsons, Ali G, Kent Hovind, Ken Miller, & Chimpa

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Related tags: evolution , carl , sagan , dna , cosmos , dinosaur , natural , selection , charles , darwin , space , universe , stars , earth , astronomy , creation ,

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