A New View of the Early Earth, Thanks to Australian Rocks
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Hadean Period,
Geophysics Early Earth,
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The first 700 million years of Earth's 4.5-billion-year existence are known as the Hadean period, after Hades, or, to shed the ancient Greek name, Hel...
nytimes.com | KENNETH CHANG | Posted 01.01.2009 | Home