Archean eon :

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  • Early Earth Relied On Carbon To Keep Warm Enough For Life
    Lee Rannals for - Your Universe Online University of Colorado Boulder researchers have figured out how early Earth was warm enough to support life when the sun was 20 per cent dimmer than today. A new study determined that all that may have been required to sustain liquid water and primitive life on Earth during the Archean eon, 2.8 billion years ago, were the reasonable atmospheric ...
    July 10, 2013 - redOrbit

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