Here's what I found about US greehouse gas emissions from the US Energy Information Administration at the Department of Energy:
Quote:
It is estimated that U.S. energy-related carbon dioxide emissions in 2001 totaled 5,692 million metric tons. To put U.S. emissions in a global perspective, total energy-related carbon dioxide emissions for the world in 2001 are estimated at 23,899 million metric tons, making U.S. emissions about 24 percent of the world total.
http://www.eia.doe.gov/oiaf/1605/gg04rpt/emission.html
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