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 e