March 7, 2017
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Old Civilizations Missing...
"Why Haven’t We Found Civilizations Older Than 7,000 — 8,000 years?"
Nifty article - http://crev.info/2017/02/civilization-late-in-coming/
"Why Haven’t We Found Civilizations Older Than 7,000 — 8,000 years?"
Nifty article - http://crev.info/2017/02/civilization-late-in-coming/
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