Ancient rocks show life could have flourished on Earth 3.2 billion years ago
Seattle WA (SPX) Feb 19, 2015 - A spark from a lightning bolt, interstellar dust, or a subsea volcano could have triggered the very first life on Earth. But what happened next? Life can exist without oxygen, but without plentiful nitrogen to build genes - essential to viruses, bacteria and all other organisms - life on the early Earth would have been scarce. The ability to use atmospheric nitrogen to support more widespr ... more
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