In the Great Indian Desert (northwestern India), Alexander the Great’s scout Aristobulos discovered the remains of about 800 settlements, and in North Africa where today is the Sahara, rock art indicating that land was verdant (where Old Kingdom Egyptian pharaohs traversed), those lands and others around the world now stark deserts which during the Ice Age received about 5x the rainfall because of much more rain-producing cloud cover having been caused by the ocean warmer in the aftermath of Noah’s Flood.