The Vulcan Project, led by a team of Purdue University researchers, has created a Google Earth tool that shows you CO2 emissions coming from each county in the U.S.
The tool breaks down emissions into industrial, residential, commercial, and other categories for each county.
The team plans to be able to release emissions data by street or even by building as more data is collected.
This tool is really cool and a great way to see where most of our CO2 emissions are coming from. Check it out at the link above.