I found out about the Younger Dryas because of the notion that "Jericho is the oldest human settlement". Apparently, it was a "good" site, but too cold in the

I found out about the Younger Dryas because of the notion that "Jericho is the oldest human settlement". Apparently, it was a "good" site, but too cold in the Winter, in the Younger Dryas, so it was inhabited nomadically. When the climate settled, Jericho could lure the nomads into "staying more" and became the "first city".