Dense smoke from Canadian wildfires is drifting across the U.S., canceling flights and sporting events, and threatening severe health problems for millions of Americans. Chicago's air quality now ...

A new study finds that smoke particles in the stratosphere can trigger chemical reactions that erode the ozone layer -- and that smoke particles from Australian wildfires widened the ozone hole by 10 ...

GREENSBORO, N.C. — Millions of people are impacted by the wildfire smoke coming from Canada. It's causing air quality alerts for 3/4 of the U.S. Yes, it's hazy, but what makes the wildfire smoke ...

The Los Angeles wildfires have caused devastating losses of homes and lives — and survivors may also face hidden, although still potentially very dangerous, health effects. Wildfire smoke contains a ...

I've become dependent on my air purifier to capture allergens such as dust and pollen during the spring allergy season, as ...

Smoke from Canadian wildfires continues to spread from the Eastern U.S., to the Midwest. Cleveland and Detroit are now experiencing unhealthy air pollution. But some of the poorest air quality in the ...

With smoke from wildfires in Canada blanketing cities in the northeastern U.S., health officials are urging people to stay indoors, and wear high quality N95 masks outside. But indoor air can be even ...

WASHINGTON, D.C., USA — The primary topic of discussion the last couple days has been the smoke from wildfires in Canada that has infiltrated the skies over most of the mid-Atlantic and Northeast. It ...

From the column: "For Duluth, expanding air-quality monitoring in schools, libraries, and public buildings would provide ...

Rhode Island environmental officials are issuing an air quality alert for the entire state Saturday. ALSO READ: Trees topple, streets flood as severe storms push through Southern New England The Rhode ...