The U.S. passed another historic marker in its energy revolution this year. In February, U.S. transportation emitted more carbon dioxide than the fossil-fuel-heavy power sector for the first time since 1978. Overall, the U.S. has seen a 25 percent drop in carbon-dioxide emissions since 2008, the Department of Energy said, a function of the rise of natural gas and smarter energy use.

Source: America’s Energy Revolution Hits a Historic Milepost – Bloomberg