Your Inner Fish

S1 | E3 | Airdate: 04/23/2014
From PBS 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. Find out which beneficial traits—and some less useful ones—our primate progenitors bequeathed us.