Source   http://www.wellhome.com/
Related posts:
Number of Inhabitants Per Doctor
Haiti Disaster Relief: A Global Effort
DNS Root Servers - Google Maps
Hamburgers: The Economics of America's Favorite Food
A tree-mendous Christmas!
The Numbers Behind StumbleUpon's Social Media Network
The Most Expensive 'Home' in the World [Infographic]
Changing Our English One Thumb at a Time [Infographic]
What’s In A Sneeze? [Infographic]
The Worst Computers of All Time [Infographic]