Bonk: The Curious Coupling of Science and Sex by Mary Roach 2008 (319 pgs)
Roach writes the best kind of science- compulsively compelling and delightfully accessible. In her third book, she delves into the history and current state of sex research. With short sections ranging from artificial insemination of farm animals to the study of rats in polyester pants (really!). Extremely informative, occasionally shocking, often hilarious, and always entertaining, Roach knows how to present science in a way that keeps you coming back for more.