Mary Roach is the author of several best-selling books of science journalism, including Stiff (about cadavers) and Bonk (about sex). Her most recent is Packing for Mars: The Curious Science of Life in the Void. It’s an investigation of the science of human travel in space, from the high-minded (cosmic rays, interpersonal relationships, muscle degeneration) to the less-high-minded (farts, poops, barfs).
