Science
Ancient Earth was a water world – Science Magazine
Life and plate tectonics may have emerged on a planet drowned in water that was rejected by the mantle
Researchers believe land would have been scarce some 3 billion to 4 billion years ago.
Alec Brenner/Harvard University
By Paul VoosenMar. 9, 2021 , 9:00 AM
Across the ages, sea levels have risen and fallen with temperaturesbut Earths total surface water was always assumed to be constant. Now, evidence is mounting that some 3 billion to 4 billion years ago, the planets oceans held nearly twice as much waterenough to submerge todays continents above the peak of Mount Everest. The flood could have…
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