Your Inner Fish

Ancient Human Ancestors: Walking in the Woods

Clip: Episode 3 | 3m 47s

When did we start walking exclusively on two legs, and how did this transition take place? Neil Shubin pays a visit to Tim White and Owen Lovejoy, two anthropologists working together to understand "Ardi," a 4.4-million-year-old fossil that sheds light on our transition to bipedalism.

Aired: 04/09/14

Rating: NR

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