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| arly Life On Earth Began On Land No |
| arly Life On Earth Began On Land Not Sea: Report
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| UNITED STATES OF AMERICA
, 19-July-2017
6:41:41 AM |
| A paradigm-shifting hypothesis has pushed back the time for the emergence of microbial life on Earth by 580 million years, suggesting that life began not in the sea but on land.
The new model is based on stromatolites -- round, multi-layered mineral structures that range from the size of golf balls to weather balloons and represent the oldest evidence that there were living organisms on Earth 3.5 billion years ago.
The team from University of California-Santa Cruz and University of New South Wales in Sydney scoured the forbidding landscape of the Pilbara region of Western Australia looking for clues to how ancient microbes could have produced the abundant stromatolites that were discovered there in the 1970s.
Scientists who believed life began in the ocean thought these mineral formations had formed in shallow, salty seawater, just like living stromatolites in the World Heritage-listed area of Shark Bay, which is a two-day drive from the Pilbara.
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