Family That Walks on All Fours Nova : Season 33 Episode 18

Name: Family That Walks on All Fours
Released: 2006-11-14

TV-PG PBS 1h 00m int(0)

Aired: November 14th, 2006 @ 9:00 PM EST on PBS

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Season 33 Episode 19 NOVA ScienceNOW: Extinction

October 3rd, 2006