but nearly half of Americans still live with unhealthy air pollution, a new report finds. The report comes as the Trump administration is considering rolling back some key air quality regulations.

Almost half of everyone who lives in the United States breathes unhealthy levels of air pollution, according to the American Lung Association’s annual State of the Air report, released Wednesday.

Listen to more stories on the Noa app. It’s hard to picture a person dropping dead from air pollution, yet it happens all the time. In the United States, particulate matter is estimated to kill ...

This substance is air pollution in the form of fine particulate matter (known as PM2.5). A firefighting helicopter drops water as the Hughes Fire burns north of Los Angeles on January 22 ...

Air pollution levels keep getting worse for more people in the US, according to a new report, and experts say the Trump administration’s proposed deregulation plans will make it even harder for ...