John Snow’s Famous Cholera Map

Posted to Maps  |  Nathan Yau

John Snow Cholera MapIf you've read any books on visualization, without a doubt, you've seen John Snow's now famous cholera map. In 1854, people were dying in large numbers and high frequency, but nobody knew what was going on. John Snow solved the mystery with his map.

It's crazy to imagine a time when people didn't think to map data, especially now as mapping data has become second nature for some. Steven Johnson, author of Ghost Map, goes into depth on the Cholera outbreak in London in his book and TED talk earlier this year.

I'd embed it, but I can't find the link anywhere on the TED page. They probably had to make it less obvious after Hans Rosling's talk spread at the speed of Cholera in London in 1854. London hasn't had another outbreak since Snow's simple (for this day and age) but effective visualization.

UPDATE: Here's Steven Johnson's TED talk

3 Comments

Favorites

The Most Unisex Names in US History

Moving on from the most trendy names in US history, let’s look at the most unisex ones. Some names have …

Famous Movie Quotes as Charts

In celebration of their 100-year anniversary, the American Film Institute selected the 100 most memorable quotes from American cinema, and …

Jobs Charted by State and Salary

Jobs and pay can vary a lot depending on where you live, based on 2013 data from the Bureau of Labor Statistics. Here’s an interactive to look.

Reviving the Statistical Atlas of the United States with New Data

Due to budget cuts, there is no plan for an updated atlas. So I recreated the original 1870 Atlas using today’s publicly available data.