Pinterest • The world’s catalogue of ideas

The 200th anniversary of John Snow’s birth on 15th March 2013 provides an occasion to celebrate Snow’s achievements - best known for his work on cholera, for a famous map, and for organizing the removal of a pump handle on Broad Street on 8th September 1854.

pin 10

The Ghost Map: Hard Lessons in Epidemiology from Victorian London

pin 2
heart 1

John Snow's data journalism: the cholera map that changed the world

pin 2

John Snow's Cholera map >>> Can you guess where the cholera was coming from, in this seminal 19th century thematic map?

pin 1

Better than GPS: a history of cartography in 12 amazing maps

Important maps: Original map by John Snow showing the clusters of cholera cases in the London epidemic of 1854, drawn and lithographed by Charles Cheffins

Why the modern bathroom is a wasteful, unhealthy design

For centuries standing pumps were the main source of fresh water for cities. In 1854, in the middle of a cholera epidemic in London, Dr John Snow mapped where victims died and found that the deaths seemed concentrated around one of those pumps, at 37 Broad Street. When he had the handle removed from the pump, the cholera epidemic stopped immediately. He had made the first verifiable connection between human waste and disease. Credit: Bridgeman Art

John Snow's data journalism: the cholera map that changed the world

pin 1

John Snow's data journalism: the cholera map that changed the world

Robin painstakingly georeferenced every cholera death and pump location, so we could recreate the map on a modern layout of London. We wondered what would happen if we tried to recreate the map using a modern tool, opting to try CartoDB, using the the lovely Stamen 'toner' projection to at least keep the background in common with Snow's London.