Source  http://www.degreesearch.org/
Related posts:
Breathing Earth! – CO2 emissions simulated in real time
Global Energy Demand by region : 2005-2030
Online Holiday Sales Trends: What it Means to Sell Online During the Holidays
How Does the AdWords Auction Work? [Infographic]
STAR WARS 35th Anniversary: Timeline [Infographic]
Baby Names 101 [Infographic]
The Most Valuable Companies in America Over 100 Years
The Sports Economy
How to Keep Learning (When You Are Not That Young)
The Most Iconic Job in Every State