The Book of Why

How do airplanes fly? Why do I like chocolate and not spinach? Why do flowers smell good? How do we know what we want to be when we grow up? Why are some people rich and others poor? Why are planets round? Why do we dream? Why are wars fought? Why is it that we're not upside down when we're on the other side of the world? Why won't our parents let us get a dog? These and 80 other burning questions are thoughtfully answered in this well-researched book.