Source  http://www.maptd.com/
Related posts:
The Internets Undersea World
New York Underground Networking
The History of Computers 1938 to 2010
Traffic-Related Deaths Around the World [Infographic]
NASA Fun Facts About the Space Shuttle Orbiter
US Healthcare vs. the Rest of the World [Infographic]
Staff turnover costs big money for small businesses [infographic]
The Interconnected World of Tech Companies [INFOGRAPHIC]
The History of the Christmas Tree [Infographic]
Fly High - World Record Goal