What happened to the great cities of the Mayans? The usual thinking is that their civilization and cities were brought down by protracted drought, or some Malthusian combination of horrors involving overpopulation, climate change and…

What happened to the great cities of the Mayans? The usual thinking is that their civilization and cities were brought down by protracted drought, or some Malthusian combination of horrors involving overpopulation, climate change and…