It's one thing to know a cool fact, such as the fact that scientists have found a fossil of two dinosaurs fighting. It's even more amazing to know the "how" behind this fact: the dinosaurs were fighting and the sand bank they were on collapsed and both died. This book presents a dozen incredible facts that will make readers says "Wow!" Each fact is paired with an explanation--the "how"--that provides age-appropriate details backing up the fact. Full-color illustrations of amazing dinosaurs complement each "wow" and "how" included in the book.