Why do your feet age more slowly than your head? Is time travel possible? How did spies use clocks to complete secret missions? What caused the year of confusion? Why don't naked mole rats age? Find the fascinating answers to these questions and many more in this book full of mind-boggling facts about time. Ideal for fact loving readers aged 8+. Each book in this best-selling and award-winning series presents 100 bite-sized topics, with bold, graphic illustrations and clear text. Perfect for dipping in and out of, and for sharing with family and friends.