As a class, we have looked at the impact of human behavior on climate and ecosystems all year. When we studied the Ancient Maya, we were awestruck by their resourcefulness as we learned of how they engineered water systems, whether to harvest rain during the dry season or to manage flooding where rain was abundant year round. We also learned, that they were involved in clear cutting both to develop crop land and their impressive cities. Some historians believe the Ancient Maya may have abandoned their cities because, as a society they overtaxed their natural resources. This in turn may have led to civil unrest.