Love dinosaurs? Check out the weapons on these giant, old creatures. We learn about them by looking at and studying fossils left behind from millions of years ago.
Earth was a lot different when dinosaurs were around, but they have left us important clues. Find out how scientists use these clues to learn what kinds of dinosaurs lived where, what they ate, and how fast they could run. You may also be surprised to learn which animals living today are dinosaur relatives!