Where 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.
YOUR INNER FISH airs Wednesdays, April 9-23, 2014, 10/9c as part of PBS’ THINK WEDNESDAY.
