Reuters: U.S. greenhouse gas emissions fell nearly 10 percent from 2005 to 2012, more than halfway toward the United States' 2020 target pledged at United Nations climate talks, according to the latest national emissions inventory. The report showed that emissions dropped 3.4 percent from 2012 to 2011, mostly due to a decrease in energy consumption and fuel switching from coal to natural gas. The Environmental Protection Agency on Tuesday published the United States' 19th annual emissions tally to the U.N....