Add Yahoo as a preferred source to see more of our stories on Google. Large industrial facilities like this oil refinery outside Houston are major sources of fine particulate air pollution. AP ...

The weather situation in California and Oregon requires extra precautions. The U.S. Environmental Protection Agency (EPA) ...

Particle radioactivity, a characteristic of air pollution that reflects the colorless, odorless gas radon found in fine particulate matter (PM 2.5) air pollution, enhances PM 2.5 toxicity and ...

Smoke permeates everything and impacts everyone. The visible stew of carbon and particulates typically from emission sources travels in the air, shrouds buildings, suffocates birds, and penetrates ...

Recently we've experienced a trifecta regarding the issue of mortality associated with fine particles (PM2.5, i.e., particles with median diameters less than 2.5 millionths of a meter). Let's take ...

When the Environmental Protection Agency cuts allowable particle pollution levels more than 45 percent, you might expect commendations from environmentalists and the press. You’d be disappointed.

Particle radioactivity, a characteristic of air pollution that reflects the colorless, odorless gas radon found in fine particulate matter (PM2.5) air pollution, increased the risk of death from ...

Delhi’s air debate is dominated by numbers—daily AQI values, PM2.5 averages, counts of “good”, “poor”, and “severe” days.

Utah has significantly reduced air pollution despite population growth but faces ongoing ozone challenges largely from fuels and chemicals.