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 ...

A new study out in the journal Science Advances finds that chronic exposure to wildfire smoke has contributed to tens of ...

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 ...

Residents in Alaska, Pennsylvania and Alabama are urged to stay indoors Tuesday.

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 a ...

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. EPA ...

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.

The elderly, children and those with existing heart and lung conditions should “avoid long or intense outdoor activities." ...