Energy-related Carbon Dioxide Emissions Declined In 2012

Energy-related carbon dioxide emissions declined in 2012.Energy-related carbon dioxide (CO2) emissions in 2012 were the lowest in the United States since 1994, at 5.3 billion metric tons of CO2 (see figure above). With the exception of 2010, emissions have declined every year since 2007.The largest drop in emissions in 2012 came from coal, which is used almost exclusively for electricity