Morning Edition for January 28, 2013
Jan 28, 2013 — Public health expert Derek Yach surprised nutrition advocates when he joined PepsiCo six years ago. He got the company to cut salt, sugar and fat from some popular products like chips and soda. But critics say he did more harm than good.
Jan 28, 2013 — To understand how social rules affect the interactions between humans and machines, scientists re-created a famous psychology experiment using robots. What they found is that if robots are nice to us, we're nice to them. If they're not, we "punish" them.