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What Darwin Never Knew


What Darwin Never Knew

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Item Number:
PBS NOVA6188
Price:
$24.99
Format:
DVD
Length:
120 min.
Copyright:
2009
Closed Caption:
n/a
Producer:
PBS
Grade Level:
College/Adult
Summary:
Earth teems with a staggering variety of animals, including 9,000 kinds of birds, 28,000 types of fish, and more than 350,000 species of beetles alone. What explains this explosion of living creatures-1.4 million different species discovered so far, with perhaps another 50 million more to go? The source of life's endless forms was a profound mystery until Charles Darwin's revolutionary idea of natural selection, which he showed could help explain the gradual development of life on earth. But Darwin's radical insights raised as many questions as they answered. What actually drives evolution and turns one species into another? And how did we evolve? On Charles Darwin's 2009 bicentennial, and the 150th anniversary of the publication of On the Origin of Species, NOVA reveals answers to the riddles that Darwin couldn't explain. Stunning breakthroughs in a brand new science-nicknamed "evo devo"-are linking the enigma of origins to another of nature's great mysteries, the development of an embryo. To explore this exciting new idea, NOVA takes viewers on a journey from the Galapagos Islands to the Arctic, and from the Cambrian explosion of animal forms half a billion years ago to the research labs of today. Here scientists are finally beginning to crack nature's biggest secrets at the genetic level. And, as NOVA shows in this absorbing detective story, the results are confirming the brilliance of Darwin's insights while exposing clues to life's breathtaking diversity in ways he could scarcely have imagined.




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