Serial Collapses of Ancient Pueblo Societies Carry a Stark Warning For Today’s World

Scheffer and colleagues suspect slowly accumulating social tensions – like wealth inequality, racial injustice, and general unrest – wore away at social cohesion until all it took was a bit more pressure from another drought to tip them over the edge. This appears to have happened to the Pueblo peoples around 700, 900, and 1140 CE.
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