Kowloon Walled City was the densest place in the world, ever. Read more in this episode of 99% Invisible
Read more on Wikipedia
An infographic reveals the world’s most influential people, born before 1950, based on data from all language editions of Wikipedia.
Read the full story on Wired UK: http://www.wired.co.uk/magazine/archive/2012/11/start/wikipedias-top-20-religion-pips-science