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NOVA

Becoming Human Part 3

  • Aired: 11/16/2009
  • 51:32
  • Rating: TV-PG
The third hour of NOVA's comprehensive, three-part special "Becoming Human" examines why, of the many species of humans that once shared the globe, only our species, Homo sapiens, remains.
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Becoming Human Part 3
Last Human Standing: Many human species once shared the globe. Why do we alone remain?
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