456 Bear Trekking; Wilderness Edens; Juan Villoro's Mexico City Insider

Rick interviews ecologist Chris Morgan who says that saving the habitat for bears can save the planet for the rest of us. Get a taste of what wildlife photographer Marty Essen encountered from the Arctic Refuge to the Florida Everglades. Author Juan Villoro explains why soccer is as important as religion and shares an insider's perspective on life in today's Mexico City.