"We are all replaceable to some degree or another . . . with the exception of Mary Roach. There is no one and nothing like hersingular, bizarre, dedicated, passionate, fascinating. Her writing traffics at the unusual intersection of science, storytelling, and humor. That is a very tricky intersection to navigate, and no one does it as masterfully or consistently as she. I devour everything she writes." -- Jason Alexander, actor/director "Mary Roach has had a more direct impact on my career than any other writer. She is her own genre of bookgonzo, hilarious, wildly educational. This is Roach at her finest." -- Daniel Kraus, author of Whale Fall "In her brilliant (and brilliantly funny book) Replaceable You, Mary Roach explores the puzzle of the human body, the way we can assemble and reassemble the very human pieces into different versions of who we are and how we work. The result is intriguing, compassionate, wise andas with all her booksaddictively readable. Or to put this another way: Don't miss it." -- Deborah Blum, best-selling author of The Poisoners Handbook