Education of the Mind: TIL that Pope Gregory IX told his followers that cats were associated with the devil. As a result, people started killing cats. With fewer cats around to hunt rats, the rat population exploded...leading to the spread of the bubonic plague.

Thursday, July 13, 2017

TIL that Pope Gregory IX told his followers that cats were associated with the devil. As a result, people started killing cats. With fewer cats around to hunt rats, the rat population exploded...leading to the spread of the bubonic plague.

http://ift.tt/2tltgUC via /r/todayilearned http://ift.tt/2tP4UWH

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