The main technology of selective catalytic reduction of nitrogen oxides uses ammonia as a reducing ... are important to understand how detailed structure and composition influence performance ...

NOx pollution occurs when nitrogen oxides are released as a gas into the atmosphere during the high-temperature combustion of fossil fuels. These nitrogen oxides consist mainly of two molecules ...

DETROIT (AP) — In a little over four years, new heavy truck makers will have to cut harmful nitrogen oxide pollution more than 80% under new standards released Tuesday by the U.S. Environmental ...

Nitrogen oxides, a group of gases from the burning of fossil fuels, is linked to a range of health effects. By Austyn Gaffney A rule proposed by the Environmental Protection Agency on Friday could ...

Some environmental and health advocates praised the standards but others said they don’t go far enough to curb nitrogen oxide, which can cause issues including respiratory illness ...