Chemical Clues Hint Life on Earth May Have Started 3.2 Billion Years Ago

February 17, 2015 11:05 AM

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Scientists have long held life on Earth began to flourish some two billion years ago. New research, however, has found evidence that suggests life started much earlier.

Scientists have long held life on Earth began to flourish some two billion years ago. New research, however, has found evidence that suggests life started much earlier.

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