“Rudimentary life may have existed on Earth 3.95 billion years ago, a time when our infant planet was being…

“Rudimentary life may have existed on Earth 3.95 billion years ago, a time when our infant planet was being bombarded by comets and had hardly any oxygen, researchers said Wednesday.

A team presented what they say is the oldest-known fossil evidence for life on the Blue Planet—grains of graphite, a form of carbon, wedged into ancient sedimentary rocks in Labrador, Canada.

The previous most ancient life traces were reported in March, from a site in Quebec estimated at between 3.8 billion and 4.3 billion years old, though an author of the new study called that dating process “highly controversial.”

“This is the oldest evidence,” Tsuyoshi Komiya of The University of Tokyo insisted in an email exchange with AFP.”

Read more at: https://phys.org/news/2017-09-life-earth-date-bn-years.html

https://phys.org/news/2017-09-life-earth-date-bn-years.html

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