Miasma Theory and the Evil Air

Prior to the germ theory of disease, miasma theory ruled the day -- the notion that bad air, full of destructive particles, wafted out from the foul places of the earth to corrupt everything it touched. In this episode of Stuff to Blow Your Mind, Robert and Joe explore the origins or the theory, its effects on society and how it eventually gave way to an accurate understanding of contagion.

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