Here it comes the 5th post about infographics. It is quite remotely related with urbanism, however here you can find an article how much space would we need if everybody in the world started consuming as e.g. americans.
“Assuming we were able to use all the land on the planet–with the exception of Antarctica– here’s how much of Earth(s) we would need if we all lived like people in Bangladesh (or India. Or France. Or, yes, the U.S)” (Elert, 2012):
Futher reading: Elert E. (2012) http://www.popsci.com