200 years ago, John Snow (no, not that one!) became obsessed with the puzzling outbreak of cholera in a mining village near Newcastle-upon-Tyne, and later created a map that helped the
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200 years ago, John Snow (no, not that one!) became obsessed with the puzzling outbreak of cholera in a mining village near Newcastle-upon-Tyne, and later created a map that helped the discovery of why cholera happened in the dirty city streets of London, and led to the eventual discovery of a treatment for the disease.
