• COVER STORY: The Science Of Appetite - There's a lot more to feeling hungry than you think. New research into what drives us to eat may teach us how to control the urge • NATION: An Auto Insider Takes on Climate Change - Congressman John Dingell has been accused of being in bed with the auto industry. But that's not stopping him from tackling global warming • HISTORY: America's Fear of Outsiders - The U.S. has always been a nation of immigrants. It's always been a nation ambivalent about them too • WORLD: In the Shadow of the Six-Day War - Forty years later, defeats and disappointments continue to shape the lives of Palestinians and Israelis • HEALTH & MEDICINE: How Babies Decode Faces - For infants, learning a language can mean looking as well as listening