Dave Williams

Of all the questions astronauts are asked by kids, the most frequent one is "How do you go to the toilet in space?" This book not only answers that question, but many others about the effect of zero gravity on the human body: How do you brush your hair in space? What happens when you sweat? What does food taste like? The best thing is that the answers are provided by Dr. Dave Williams, a NASA astronaut who speaks from first-hand experience.