Drool School

Best-selling gross-out science writer Mary Roach, whose popular nonfiction books Spook and Stiff covered ideas about the afterlife and the physical process of postmor-tem decay, has a new book out. In Gulp: Adventures on the Alimentary Canal, the Oakland-based author covers the digestive process from saliva to anus. Inspired by a conversation with a gastroenterologist, Roach set out to discover all she could from experts on subjects like food and flatulence. Did you know that it’s a myth that our mouths water when we smell food cooking? And there are actually two sets of nostrils humans smell through — exhale through your nose while you’re chewing or drink-ing, and the scent will travel through the back of your mouth to the top of your nasal cavity, as opposed to the usual method of smelling straight through the nose. Check out some highlights from her recent appearance on The Daily Show, and catch her in person at one of her two S.F. talks.
Tue., April 23, 7 p.m., 2013

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