As I fly over the USA, which I seemed to do a lot this year, I have noticed that such a significant percentage of the country is just inhospitable desert.
The land that can be comfortably inhabited seems to be teeming with people and infrastructure.
So the info-graphic, while informative and interesting, could provide more helpful information with another layer of data.
By the way, only a small portion of the entire graphic is presented here in this post and is presented in miniature size. To see the full graphic, click the link above.