Genetics of longevity, diaper-free movement, possible plane problems from personal electronics

Summary: In this episode, biologist Lenny Guarente talks about his Scientific American article on the genetics of aging; anthropologist Meredith Small discusses the "diaper-free movement"; and computer engineer M. Granger Morgan talks about the possible dangers to aircraft navigation posed by electronic devices used by passengers. Also: see if you can spot the fake science story in the batch we'll throw your way.