Scientists at Purdue University have mapped the carbon emissions across the United States in a project called Vulcan. The map is a layer in Google Earth that allows one to zoom in and see the US emissions at a state or county level. It is one more way to see where the emissions come from and what we are all doing. One can see the mapping in more detail at http://www.purdue.edu/eas/carbon/vulcan/GEarth/.
