This fun-filled Q&A book is packed with answers to questions that curious children want to know--and parents are only too happy to help them discover. Curious children can learn about Inventions, the Earth, Space, and Everyday Phenomena. They'll find the answers to questions such as: Why do people sweat? What is the ancestor of the computer? What is the oldest musical instrument? How do thunderstorms form? Why does our tummy grumble when we are hungry? Why was the Rubik's Cube invented? And many more Includes lots of fascinating answers--and cool stickers too!