After searching for some of the first stone tools made by our ancestors, Neil Shubin pays a visit to anthropologist Tracy Kivel, who shows us how changes in the hands of our ancestors led to the ability to create and use tools.
YOUR INNER FISH airs Wednesdays, April 9-23 at 10/9c following NATURE at 8/7c and NOVA at 9/8c as part of PBS’ THINK WEDNESDAY.
