Anthropologist John Hawks of the University of Wisconsin - Madison talks about recent human evolution, especially of our ability to digest lactose. And producer Graham Townsley discusses his three-part PBS NOVA premiering on November 3rd called "Becoming Human". Plus, we test your knowledge of some recent science in the news. Web sites related to this episode include www.snipurl.com/t1ivr
Learn more about your ad choices. Visit megaphone.fm/adchoices