[ExI] Earliest evidence of life

[John Clark]

The Journal nature reports on evidence of life that is at least 3.77
​billion ​
and might be as old as 4.28 billion years. It was found in a ancient
hydrothermal vent in Quebec. Even the younger figure would be the oldest
sign of life ever found.

http://www.nature.com/nature/journal/v543/n7643/full/nature21377.html

John K Clark
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