This book contains a wealth of information on the nitty gritty of living with zero gravity. Everything from why vets took charge of nutrition in space to the amusing and embarrassingly yucky difficulties of taking calls of nature. It looks at the difficulties of showering, eating, motion sickness, cabin fever the list goes on. Everything you ever wanted to know about life in zero g and believe me a whole lot more. It's serious, it's funny, it's interesting and it's well worth a read. I really don't know where else you could find this stuff out. It's written in a down to earth manner (pun intended) by an author who has obviously, thoroughly investigated the material. I found a few paragraphs detailing the difficulties of practicing one's religion to be particularly hillarious. An interesting subject, an entertaining and informative author, a great read.