Book excerpt: Travel back in time and watch the incredible story of life on Earth unfold. Life Through Time explores the origins of species that still exist today in early fish, amphibians, birds, reptiles, and mammals. It takes readers through the years of dinosaurs and megafauna up to the appearance of our first human ancestors around six million years ago, to the evolution of hunter-gathering Homo sapiens in the Ice Age and the first civilizations. Perfect for children and parents to read together and discover the incredible story of life on our planet. Open the book and let the 700-million-year journey begin!