Did you know that a zeptosecond is a trillionth of a billionth of a second? Or that the US once had 144 different time zones? Or that across your lifetime, you'll spend about 33 years in bed? Discover more questions, answers, and theories in this bumper book all about the past, present, future, and beyond! The Book of Time is brimming with fascinating information about the concept of time. What is time? How does it work? And is it even real? The book uses time as a lens to explore a wide variety of STEAM subjects that kids know and love-such as space, dinosaurs, animals, the human body, and machinery-with a completely fresh perspective. Through a simple yet fascinating approach, you'll learn about: The measurements of time Big and small time Time-travel Paradoxes And lots more mind-boggling things Cool, graphic illustrations help convey sometime abstract concepts and make for an engrossing reading experience. Children will be able to wow and amaze all their family and friends with extensive and fascinating information about time. Absorbing, entertaining, and surprising, The Book of Time will teach kids to look at the world in a whole new way.