Advent of Complex Life

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NASA Astrobiology Institute

Home › A Walk Through Geologic Time

The Origin of Life - 3500 million years ago

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Learn more about the origin of life from NOVA
CCSF's page on the origin of life

‹ Oceans and Continents Form - 4400 million years ago up The Rise of Oxygen - 2400 million years ago ›

the earliest evidence of life on Earth

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