Lift the flaps to explore outer space! Which planet is the hottest? How many astronauts have been to the Moon? Which planet has dust devils? Find out the answer

A fact-filled introduction to Planet Earth for preschoolers, with over thirty flaps, a turn-and-learn wheel and foldout ending -just in time for the 50th annive

Lift the flaps to learn how the human body works! Which muscle is the biggest? What happens when you sneeze? Which bone is the smallest? Find out the answers to

Blast off into space on a mission around the solar system.

You don't have to be an aerospace engineer to know about the remarkable scientific forces at work in our universe. You don't even have to leave the planet. This