Rodinia

More than a billion years ago, Earth had land, oceans, atmosphere, energy, and life-but the planet still did not fully work as a living system.

Rodinia: The Mother of Supercontinents explores a vanished world in which the essential ingredients for habitability were present but poorly coordinated. The land was barren and exposed. Oxygen existed, but it was low and unstable. Ozone formed, but protection from ultraviolet radiation did not hold consistently. Water supported life in the oceans, y...