A different way of looking at the globe that I thought was interesting...this first link is an animation showing income/day, you can click other categories to see animate by clicking the npr link.

http://www.worldmapper.org/animations/income_animation.html

if the flash doesn't work for you, you can see the different categories from the npr article I found it from:

http://www.npr.org/blogs/krulwich/2010/09/02/129609503/oh-my-gosh-what-happened-to-paraguay-and-china-you-are-so-big#more