"The ultimate brainy bedtime companion for children aged 4 to 9." - USA Today Why do we sleep? How do sharks snooze underwater? Where is the oldest bed in the world? In this compendium of 5-minute really true stories about bedtime, you can go on a journey of wonder and learning to find out the answers to all these questions, and many more Travel to Ancient Egypt to explore the beds of Tutankhamun, jet off into space...