Something terrible happened here. The most advanced civilizations and cities are found in these desert areas. As I've mentioned in the past, these were not deserts at the time when these advanced civilizations lived. From the Olmec civilization, the Mayans, Aztecs, and the Indus Valley to the lost Chinese cities and underground pyramids, Sumeria, Egypt, Nubia, and possibly even Atlantis in the Sahara's eye? There were once giant lakes in that area of Africa... The ancient Incas and Nazca people,