Ancient Earth is an original CuriosityStream documentary series running for 2 seasons. Each season comprises of 3-3 episodes, respectively that feature stunning animations in Ultra HD 4K quality. The 1st season sheds light on the kind of life that existed in the Permian, Triassic and Cretaceous periods. The 2nd season is about some crucial moments in the evolution of life: the disappearance of the giant insects, the rise of the feathered dinosaurs, and the dawn of the mammals.