Discover the megafauna species that have shaped our planet - from the mighty megalodon, saber-toothed cats, and giant birds that existed millions of years ago, to the elephants, giraffes, and whales that live today. Why did some of the largest creatures on Earth go extinct? What do we know about their lives from the clues they left behind? And how can we protect the megafauna that roam our planet today? Discover these secrets and many more in this captivating deep-dive into Earth's largest creatures. Written by science writer and broadcaster Jules Howard, with astonishing illustrations by Gavin Scott, MEGA includes a special book jacket that unfolds to be a ginormous poster! The perfect gift for any child age 8+ who loves animals, life science, or piecing together clues left behind by extinct species.