Yale’s Harvey Weiss’ famous study of Tell Leilan in Syria rightly deduced that climate change ended that city-state, but based on flawed carbon 14 dating, Weiss that it was circa 2200 b. c., the real date though circa 1500 b. c., when the Ice Age ended, because for instance the Indus Valley Civilization is known to have declined circa 1500 b. c. by drought, and qanat or foggara irrigation digs were not begun ’til circa 1200 b. c., when the drying by the ending of the Ice Age had fully gripped the world, that climate regime ever since, the world ocean having cooled to about today’s temperatures.
