The Trump administration has ordered the U.S. Environmental Protection Agency to end its ban on the summertime sale of E15, a blend of gasoline and corn ethanol.
Up to now, such sales have been barred because E15, which is 15 percent ethanol, contributes to more smog during hotter summer months.
The change is opposed by an unusual political alliance of environmentalists, who oppose the environmental damage, and the fossil fuel industry, which does not want to see more gasoline displaced with corn ethanol.
Ethanol combustion releases elevated levels of nitrogen oxides and volatile organic compounds, both of which form smog in the air when exposed to sunlight and high temperatures.
Source: Times Union