Gulp: Adventures on the Alimentary Canal

Best-selling popular science writer Roach (Packing for Mars: The Curious Science of Life in the Void) turns her attention here to the alimentary canal. Roach asks the questions that some readers may have always wondered: Does saliva have curative properties? Do pets taste food differently than their owners do? Could Jonah have survived three days in a whale's stomach? Could Americans lower the national debt by chewing their food more thoroughly? As she investigates these questions, Roach encounters many an eccentric scientist who has worked tirelessly to unlock the mysteries of saliva, gastrointestinal gases, and mastication. As she recounts her adventures in tasting centers and laboratories, she aims not to disgust readers, but to inspire curiosity—even awe—for the most intimate functions of the human body.