This is an illustrated story of life on Earth, from the first single-celled organisms through to the evolution of fish, land animals, dinosaurs, and mammals, to the first people. 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.