Show Summary: Mary Roach’s new book Grunt tackles the science behind being a soldier. In it, Mary visits a re-purposed movie studio where amputee actors help prepare Marine Corps medics for facing combat wounds. She also samples caffeinated meat, sniffs a WWII stink bomb, and tends to the missiles on a nuclear submarine. Once you listen to this insightful interview, ou'll never see the art of war the same way again.