The U.S. Biennial Report, as part of the 2014 U.S. Climate Action Report, outlines how U.S. action on climate change puts the United States on a path to reach the ambitious but achievable goal of reducing U.S. greenhouse gas (GHG) emissions in the range of 17 percent below 2005 levels by 2020.During 2009-2011, average U.S. GHG emissions fell to the lowest level for any three-year period since 1994-1996, due to contributions from both economic factors...