Explore the complex factors behind the mysterious depopulation of Mesa Verde in this 48-minute lecture from the Santa Fe Institute. Delve into how complex adaptive systems approaches, including food web analysis and agent-based modeling, offer new insights into the 700-year occupation and ultimate abandonment of the Four Corners region by Ancestral Pueblo people. Examine the cascading effects of resource overuse, high human density, and a maize-centric food system in an environment susceptible to prolonged droughts. Gain a deeper understanding of how small individual choices led to large-scale structural changes, and how ecosystem vulnerability and changing precipitation patterns contributed to the perfect storm that necessitated migration or innovation for survival.