The U.S. Environmental Protection Agency reported a 1 percent increase in overall greenhouse gas emissions in 2005 compared to 2004. The waste industry (garbage haulers and disposers) was responsible for more than 2 percent of the total U.S. greenhouse gas emissions. Landfills accounted for nearly 24 percent of all methane emissions.
For details, visit http://www.epa.gov/climatechange/emissions/usinventoryreport.html.