Nearly half of the U.S. population is now living with unhealthy levels of air pollution. The primary culprits ... years 2021 to 2023 is what the report covers. Extreme heat, drought, and wildfires ...

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.

In a sweeping new study of more than 13,000 urban areas worldwide, researchers have mapped air pollution levels and carbon dioxide emissions, providing comprehensive global analysis of urban ...