Tiny Teeth, Fearsome Beasts

Emily drives closer to the present day in Episode 3, “Tiny Teeth, Fearsome Beasts,” where she discovers surprising truths written in the fossil record. Emily gets to know the earliest mammals of North America, including ancient beavers, an ancient saber-toothed animal, and more. She also travels to Standing Rock reservation where she examines the effects of improper fossil collection from Native American land. Meanwhile, scientists studying our planet’s past are revealing clues about its future.