![]() ![]() ![]() ![]() "They created extensive landscapes of terraced and bunded (embanked to control water flow) agricultural fields that acted as massive sinks for water, sediment and nutrients," said lead author Associate Professor Daniel Penny, from the University of Sydney School of Geosciences. While the ceremonial and administrative urban cores of many cities were abandoned, the surrounding communities may have endured because of long-term investment in resilient landscapes. From 900 to 1500CE, Khmer cities in mainland Southeast Asia (including Angkor) and Maya cities in Mesoamerica collapsed, coinciding with periods of intense climate variability. ![]()
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