Nearly 188,000 dementia cases in the U.S. each year may have been caused by air pollution, researchers estimate, with bad air quality from wildfires and agriculture showing the strongest links to ...

Extreme heat is making air pollution worse, scientists say. And President Trump’s regulatory rollbacks could drive air ...

The researchers focus in particular on the effect of a 2020 regulation that slashed the amount of harmful sulphur used in shipping fuels. That sudden drop in air pollution over the oceans has ...

Air pollution used to be much worse. In October of 1948, a thick, choking smog settled over the small Pennsylvania town of Donora. The town was home to two steel plants.