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Becoming Human Part 3

Season 36 Episode 15 | 51m 32s

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.

Aired: 11/16/09

Expired: 12/31/15

Rating: TV-PG

Video has closed captioning.

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