Travel back 14.2 billion years to the moment everything began. This episode traces the birth of the universe from the Big Bang through the formation of matter, galaxies, and the Milky Way, culminating in the creation of our Sun and Solar System. Wow.

Witness Earth's violent infancy during the Hadean Eon — from its molten formation and the cataclysmic birth of the Moon to the Late Heavy Bombardment, the cooling of the first oceans, and the emergence of continental shields.

Explore the Archean Eon, when Earth's oldest rocks formed and the first prokaryotic life emerged in ancient seas. Discover how plate tectonics began reshaping the planet and how the earliest fossils reveal life's tenacious beginnings.

The Proterozoic Eon brought one of Earth's most dramatic transformations: the Great Oxidation Event. Learn how oxygen-producing organisms reshaped the atmosphere, paving the way for eukaryotes, Snowball Earth, and the planet's first animals.

In one of biology's greatest mysteries, complex life erupted across the oceans during the Cambrian Explosion. This episode covers the rise of trilobites, the first vertebrates and fish, and the dramatic changes of the Ordovician and Silurian periods.

The Devonian Period — the Age of Fishes — saw life make its boldest move yet: onto land. Follow the emergence of the first terrestrial animals, insects, forests, and amphibians, and the formation of the supercontinent Pangea during the Carboniferous.

The Permian Period witnessed the dawn of reptiles — and then nearly ended all life on Earth. Explore the Permian-Triassic extinction event, known as 'The Great Dying,' and how the survivors, including the first mammals, rebuilt life in the Triassic.

From the towering sauropods of the Jurassic to the terrifying tyrannosaurs of the Cretaceous, dinosaurs ruled the Earth for over 160 million years. This episode covers their reign, the first birds and primates, and the asteroid impact that ended it all.