Mary Roach on Packing for Mars

Mary Roach explores the strange universe of space travel. In Packing for Mars: The Curious Science of Life in the Void, she looks at the science of preparing for life in space—a world devoid of the things we need to survive: air, gravity, hot showers, and fresh foods. She investigates what happens if you vomit in your helmet during a space walk and if its possible for the human body to survive a bailout at 17,000 miles per hour.