NOVA

Life's Rocky Start

Passport Season 43 Episode 2 | 53m 7s

Four and a half billion years ago, the young Earth was a hellish place—a seething chaos of meteorite impacts, volcanoes belching noxious gases, and lightning flashing through a thin, torrid atmosphere. Then, in a process that has puzzled scientists for decades, life emerged. But how? NOVA joins mineralogist Robert Hazen as he journeys around the globe.

Aired: 01/13/16

Expires: 01/12/19

Rating: TV-G

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