Richard Wrangham: 'Catching Fire'

Jason Pagano
01/07/2010 at 8:00 p.m.

Richard Wrangham is a primatologist and Harvard professor of biological anthropology. He says humans evolved from apes because of one defining adaptation: we learned to cook our food. Richard Wrangham spoke about his book "Catching Fire: How Cooking Made Us Human" at Town Hall in Seattle on June 8, 2009.