John Snow (famous for works in geography)

John Snow was a pioneering epidemiologist and geographer best known for his work on cholera in 19th-century London. He mapped cases of the disease to identify a pattern, discovering that a contaminated public water pump was the source of the outbreak. By removing the handle of the pump, he effectively stopped the spread of cholera. Snow’s innovative approach combined geography, data analysis, and public health, laying the foundation for modern epidemiology. His work demonstrated how spatial analysis can solve real-world health problems, making him a key figure in both geography and public health history.