The nearest known potential pollution source — the Air National Guard Base at Tucson International Airport — stopped all use of PFAS in firefighting foam in 2018.

All the latest breaking news on Air pollution. Browse Newsweek archives of photos, videos and articles on Air pollution.

Cultura RM/Justin Borucki/Getty Images NOx pollution occurs when nitrogen oxides are released as a gas into the atmosphere during the high-temperature combustion of fossil fuels.

Breaking science news and articles on global warming, extrasolar planets, stem cells, bird flu, autism, nanotechnology, dinosaurs, evolution -- the latest discoveries ...

Get powerful, Ocean Plastic Pollution Planet Pollution Ecological Catastrophe Nyc Ny pre-shot video to fit your next project or storyboard.

15:30 AEST on Sunday 13 July 2025 | Infrared, Zehr enhanced, Australia Images from Japan Meteorological Agency satellite Himawari 8 via Bureau of Meteorology.