Mapping Carbon

I'm a sucker for a good map, but this map of U.S. carbon emissions just looks an awful lot like a map of American population density. As such, it doesn't contain a ton of useful information as "let's get rid of all the people!" isn't much of a proposal for avoiding catastrophic climate change. I'd be much more interested in seeing something that normalized by population (or economic output) and thus gave us some sense of which parts of the country are efficient compared to the others.