The epidemic known as the Black Death struck Europe in 1347 and completely upended medieval society. It's been estimated that roughly half of the European population was killed by this gruesome disease. Despite huge advances in our understanding of this epidemic debate still remains about the true cause of the plague. The so-called "Great Mortality" also remains the source of a number of tenacious historical myths. Tune in and find out how biological warfare, pockets full of posies, and rattus rattus all play a role in the story.

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