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2008-11-27 09:44:55

A new picture of the early Earth is emerging, including the surprising finding that plate tectonics may have started more than 4 billion years ago — much earlier than scientists had believed, according to new research by UCLA geochemists reported Nov. 27 in the journal Nature.


Word of the Day
shavie
  • A trick or prank.
The word 'shavie' is related to 'shave'.