1 online resource (1 streaming video file (approximately 50 min.))
Summary
Explains that for billions of years, life existed only in the Earth's oceans. But about 350 million years ago, some of those earliest life forms began to explore new frontiers on land. They could breath oxygen from the air and were able to support weight on land. Over the next hundred million years, these life forms would spread across the globe
Notes
Originally broadcast as an episode of a television series in 2005
Credits
Camera, Fumihiko Saito, Toshihiro Muta ; editor, José Heppell ; music, Daniel Toussaint