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Scientists: Earthquakes, El Ninos fatal to earliest civilization in Americas
First came the earthquakes, then the torrential rains. But the relentless march of sand across once fertile fields and bays, a process set in motion by the quakes and flooding, is probably what did in America's earliest civilization.
Other Sciences / Archaeology & Fossils
Jan 19, 2009 |
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On the edge of friction
(PhysOrg.com) -- The problem exists on both a large and a small scale, and it even bothered the ancient Egyptians. However, although physicists have long had a good understanding of friction in things like ...
Dec 20, 2011 |
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