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Oxygen Life

Ancient Earth's 'Deep History' Gets Major Rewrite

The Huffington Post | David Freeman | Posted 09.08.2014 | Science

It may be time to rewrite geology textbooks. Geologists say they've found evidence that oxygen-producing life existed on Earth some 3.02 billion ye...

What Ancient Rocks Reveal About Life On Earth, Other Planets

LiveScience | Charles Q. Choi | Posted 09.26.2013 | Science

Oxygen may have filled Earth's atmosphere hundreds of millions of years earlier than previously thought, suggesting that sunlight-dependent life aki...