S1 E3: Your Inner Monkey

Our primate progenitors had bodies a lot like those of modern monkeys and spent tens of millions of years living in trees. From them we inherited our versatile hands, amazing vision and capable brains — but also some less beneficial traits, including our bad backs and terrible sense of smell.
Aired: 4/23/2014 | 0:54:40 | Expires: 12/31/2020
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