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The Science Of Digestion

http://media.soundmedicine.org/segments/060913_4.mp3

Mary Roach is a science writer who has covered such topics as cadavers, the science of sex, and space travel. Roach now tackles the science of digestion in her new book, “Gulp: Adventures on the Alimentary Canal.” Roach describes the fascinating journey that food takes once it's eaten and how the body interacts with food. As always, her topic both fascinates and disgusts people.