Greer has been writing similar things for some time (over a decade). Some interesting, some repetitive. Mostly well founded, though much of his writing is based on pretty old studies (so I would double check his climate citations against better studies). Here are some of his older articles on the same topic:
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Greer has been writing similar things for some time (over a decade). Some interesting, some repetitive. Mostly well founded, though much of his writing is based on pretty old studies (so I would double check his climate citations against better studies). Here are some of his older articles on the same topic:
https://www.resilience.org/stories/2014-07-31/dark-age-ameri...
https://www.resilience.org/stories/2014-08-07/dark-age-ameri...