A major factor in the decline of Maya civilization Land bridge between reservoirs. Tikal, Guatemala In the Late Classic period (A.D. 500-900) this path separated two immense reservoirs in Tikal’s city center. When I was there in 2008 it was overgrown and difficult to see the bottom on either side. I estimated them to be about as deep as an eight-to-ten-story building.   Maya farmers are still around today; kings, however, disappeared 1,000 years ago. There is a lesson here on how people and water managers respond to long-term climate change, something… Read More