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Your Inner Fish | Clip | Extended Interview: Tim White

Paleoanthropologist Tim White and his team discovered a 4.4 million-year-old fossil they named Ardi. This fossil, along with other fossils of her species and from her environment, radically changed the way we think about how our species came to walk exclusively on two legs.

0:06:47 | AIRED: 4/9/2014 |
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