In the mid-1980s, a group of American archaeologists pored over satellite images trying to understand what had become of the Mayan civilization that had once ruled over Mexico’s Yucatan Peninsula, discovered a pattern: a near-perfect ring of sinkholes -cenotes- about 200km across,, encircling the Yucatecan capital, Merida, and port towns of Sisal and Progreso. … Continue reading “The Death of Mars” –Pluto-Size Asteroid Ignited Ancient Climate Change