NOVA scienceNOW

Lice and Human Evolution

Clip: Season 5 Episode 5 | 10m 52s

Icky and itchy, yes, but lice hold important clues to human evolution.

Aired: 02/16/11

Rating: NR

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Funding for NOVA ScienceNOW is provided by the National Science Foundation and the Alfred P. Sloan Foundation.