Season 33 Episodes20
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Ranked #17 of 18 in Season 33•−1.1 vs season avg
This episode focuses on a scientific debate about five siblings in a Turkish family who walk on all fours. When, in 2005, scientist Uner Tan labeled them "genetic throwbacks," they became part of the dialogue about a possible missing link to an era when humans
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"Family That Walks on All Fours" is episode 18 of NOVA season 33. It scored 6.3/10 from 15 votes, ranking #17 of 18 episodes this season (season average 7.4). It aired on November 14, 2006.