Related to the Maunder Minimum, named after my namesakes: Astronomer Walter Maunder and his wife Annie Maunder. https://en.wikipedia.org/wiki/Maunder_Minimum
And here's more info on The Little Ice Age: https://en.wikipedia.org/wiki/Little_Ice_Age
Debatable as to whether solar activity was a contributor to The Little Ice Age.
What did you think about the point in the article suggesting millions of people dying on South America caused the earth to cool down due to reforestation absorbing more green house gas. I find this hard to believe.
There was a noticable (and well recorded) change in the climate for awhile when Ghenghis Khan went on his rampage. And he was a lot less effective at killing people than novel old world diseases.
It doesn’t seem completely implausible.
Correlation vs causation?
Not sure how you could run an A/B test on the planet, really.
What a strange question.