Have you ever wondered how the planets came into being? Or what causes some people to have freckles? Ever wanted to know why mosquito bites itch and swell? Over his long career as a high school science teacher, Martin M. Goldwyn kept track of the smartest, most challenging questions his students ever asked him. Now the answers are all in your hands: What is the oldest living thing on the planet? Do fish ever go to sleep? What exactly is a brain wave? Can a single tree grow more than one kind of fruit? What causes people to have nightmares? Illustrated with original cartoons by Ted Enik, this book will have curious readers of all ages laughing and learning with every turn of the page.