 New York Times columnist Nicholas Kristof earned his stripes as a foreign correspondent writing for many of the world's hot spots. You regularly meet people with guns who just might kill you. His reporting from China and Sudan even earned him two Pulitzer Prizes. I saw peasants, rickshaw drivers who were risking their lives. Nick Kristof's our guest in the hour ahead as he reveals why he remains optimistic about the state of the world. There is a lot going on that is good that we don't always acknowledge.