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Study: Scant evidence that 'wood overuse' at Cahokia caused collapse


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IMAGE: Archaeologists at Washington University in St. Louis found scant evidence that wood overuse at Cahokia caused local flooding and subsequent collapse.
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Credit: Joe Angeles / Washington University
Whatever ultimately caused inhabitants to abandon Cahokia, it was not because they cut down too many trees, according to new research from Washington University in St. Louis.
Archaeologists from Arts & Sciences excavated around earthen mounds and analyzed sediment cores to test a persistent theory about the collapse of Cahokia, the pre-Columbian Native American city in southwestern Illinois that was once home to more than 15,000 people.
No one knows for sure why people left Cahokia, though many environmental and social explanations have been proposed. One oft-repeated theory is tied to resource exploitation: specifically, that Native Americans from densely populated Cahokia deforested the area, an environmental misstep that could ....

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Study: Scant evidence that 'wood overuse' at Cahokia caused local flooding, subsequent collapse | The Source


Study: Scant evidence that ‘wood overuse’ at Cahokia caused local flooding, subsequent collapse
The remains of the most sophisticated prehistoric native civilization north of Mexico are preserved at Cahokia Mounds State Historic Site. (Photo: Joe Angeles / Washington University)
April 8, 2021
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Whatever ultimately caused inhabitants to abandon Cahokia, it was not because they cut down too many trees, according to new research from Washington University in St. Louis.
Archaeologists from Arts & Sciences excavated around earthen mounds and analyzed sediment cores to test a persistent theory about the collapse of Cahokia, the pre-Columbian Native American city in southwestern Illinois that was once home to more than 15,000 people. ....

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Under climate stress, human innovation set stage for population surge | The Source | Washington University in St. Louis


Research highlights importance of social resilience in Bronze Age China
(Image: Shutterstock)
February 26, 2021
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Climate alone is not a driver for human behavior. The choices that people make in the face of changing conditions take place in a larger human context. And studies that combine insights from archaeologists and environmental scientists can offer more nuanced lessons about how people have responded sometimes successfully to long-term environmental changes.
One such study, from researchers at Washington University in St. Louis and the Chinese Academy of Sciences, shows that aridification in the central plains of China during the early Bronze Age did not cause population collapse, a result that highlights the importance of social resilience to climate change. ....

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