I’ve long evangelized Mary Roach’s writing because she has such a knack for conveying extremely complicated information in an incredibly entertaining way. (See also: Susan Casey and Michael Lewis.) From cadavers to space travel, she focuses on our world’s most natural curiosities – and now she’s diving into perhaps the most natural curiosity of all: digestion. In her new book, Gulp: Adventures on the Alimentary Canal, Roach takes readers on a journey through their own gullets. To get a brief idea, check out the book trailer. (It’s very “Innerspace”)