See the full episode at http://video.pbs.org/video/1372073556http://www.pbs.org/wgbh/nova/evolution/darwin-never-knew.html What Darwin Never Knew reveals answers to riddles that Darwin could not explain. NOVA takes viewers on a journey from the Galapagos Islands to the Arctic, and to the research labs of today. Scientists are finally beginning to crack nature's biggest secrets at the genetic level. The results are confirming the brilliance of Darwins insights while exposing clues to lifes breathtaking diversity in ways the great naturalist could scarcely have imagined.
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