Terry Gross

She's an associate professor of Professor of Political Science and International Affairs at the George Washington University. Her area of expertise is the privatization of security and military services.

TV personality Tom Arnold hosts FOX television's The Best Damn Sports Show Period. Arnold is probably best known for his marriage to Roseanne Barr. He was a writer, actor and executive producer on Roseanne, and starred in three tv shows of his own including The Jackie Thomas Show. He has a new memoir, How I Lost 5 Pounds in 6 Years

Journalist Ellen Ruppel Shell has written a new book, The Hungry Gene: The Science of Fat and the Future of Thin. Shell is a correspondent for The Atlantic Monthly and has written for The New York Times Magazine, Smithsonian, Discover and other publications. She's an associate professor and co-director of Knight Center for Science Journalism at Boston University.