On February 27, the Energy Information Administration’s Today in Energy report said that emissions of sulfur dioxide and nitrogen oxides from power plants in 2012 were at their lowest levels since passage of the Clean Air Act Amendment of 1990. Power plants emitted less than 4 million short tons of sulfur dioxide in 2012 (down from 16 million short tons) and emitted less than 2 million short tons of nitrogen oxides (down from more than 6 million short tons) in 1990.