A new study says cleaner air has boosted corn and soybean yields by about 20 percent since 1999.
The Stanford-led project found about a five percent corn and soybean production loss was tied to pollution from ozone, particulate matter, sulfur dioxide, and nitrogen dioxide.
Satellite data from a nine-state region covering Illinois, Indiana, Iowa, Michigan, Minnesota, Missouri, Ohio, South Dakota, and Wisconsin was analyzed from 1999 to 2019, following amendments to the Clean Air Act.
