[VadeRetro]

Regarding The Long Summer, 15,000 years ago is when temperatures began to rise. Nothing in the book's Amazon page indicates that the author thinks civilization goes back that far.

I think you're using Google too robotically.

[DannyTN]

"I think you're using Google too robotically."

Well, I didn't start out looking for 15,000. I ran across the number at least twice on Friday while looking for oldest human fossils to resolve the 300,000 vs millions debate. It was after I had seen it a couple of times that I realized there was enough support for the 15,000 year date that that may well have influenced these guy's dating this city.