Book excerpt: Why do clocks run clockwise? Why does laughing make you feel good? Why do jumping beans jump? This giant collection of frequently asked questions brims with amazing, fascinating, and informative answers. The layout is easy to navigate: readers find the answer to the perennial "Why do people burp?" under Human Body, or the all-important "Are there really only seven colors in a rainbow?" under Science. Vibrant full-color pages are packed with photographs, diagrams, and illustrations, making this book a fun, educational package and a quality gift. Why do salty foods make you thirsty? How do worms see underground? Are all frogs green? Children have posed all these questions, but the answers fascinate everyone, young and old alike.