Carbon emissions across the United States

From the New York Times, here is a fun and useful way to look at the sources of carbon dioxide emissions from each of state.  The emissions are broken down by sector, and while the two largest sources are electricity production and transportation, this is not the case for all states.  The large variance in the sources of these emissions, which are a cause of global warming, complicates the policy making process. 

What do you notice about the emissions from your state? Do you notice any specific geographic trends?  Is population a good indicator of the quantity of emissions?