Mary Roach has long established herself as one of the most entertaining reads in pop-science type investigation books, though this is the first book of hers I've picked up. The best review I can give is that after I flew through this book, the rest of her library is now on my to-do list. This book pulls back the curtain and highlights the very 'human' elements of space travel-- everything you would have wanted to ask an astronaut when you were in elementary or middle school (how do you go to the bathroom? what do you have to eat? what about the birds and the bees?), and investigates them in a very fun and informative way. Highly recommended, and I can't wait to dive into more of Roach's books.