Imagine the blooming of the very first flower. Or a 3-ton sloth with massive claws standing as tall as a giraffe. And horses the size of small dogs that have to

This series tells the incredible story of our planet, the formation of our continent, and the events and transformations that have brought the diversity of life

Imagine vast, flowing, 10,000-foot-thick ice sheets covering much of the land. See huge, elephant-like wooly mammoths roaming the tundra. Picture hunting monstr

Imagine a world with a thick stew of poisonous gases. A world so hot that metals and rock melt. There is no land, no water, no life. This is not Jupiter or Satu

Imagine a world with volcanoes erupting as a single supercontinent slowly breaks apart. Fierce creatures over 16 feet tall and 40 feet long with huge, sharp tee