Total U.S. greenhouse-gas emissions in 2008 were 2.2 percent below the 2007 total and 4.7 percent lower for the transportation sector over the same period, according to a just-released report by the U.S. Energy Information Administration, Emissions of Greenhouse Gases in the United States 2008. ———- Greenhouse-gas emissions in the U.S. economy for 2008. Click to enlarge. ———- The decline in total emissions – from 7,209.8 million metric tons carbon dioxide equivalent (MMTCO2e) in 2007 to 7,052.6 MMTCO2e in 2008 – was largely the result of a 177.8-MMTCO2e drop in carbon dioxide emissions.
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