U.S. ENERGY-RELATED CARBON DIOXIDE EMISSIONS INCREASED 2.5% IN 2013 “Energy-related carbon dioxide emissions (CO2) increased from 5,267 million metric tons (MMmt) in 2012 to 5,396 MMmt in 2013 (2.5%). The 2013 increase was largely the result of colder weather leading to an increase in energy intensity (energy measured in Btu per dollar of gross domestic… Continue Reading