Podcast: The 2014 Flame Challenge Winner

Alan Alda started the Flame Challenge in 2012 to get scientists and science enthusiasts to explain complex topics to 11-year-olds. "What is a Flame?" was the first question, followed the next year by "What is Time?" The winner of this year's question, "What is Color?" was Dianna Cowern, aka Physics Girl, and we're talking to her on this week's podcast. She's done a whole series of science videos. From Chladni plates, an old favorite... ... to the physics of the World Cup... ... and the myster...