Republican lawmakers are blaming Canada for not preventing and containing wildfires, whose smoke has fouled the air in ...

Heavy clouds of smoke billowing from wildfires filled the sky over mountains and hills in northern and western Spain on ...

Smoke produced by hundreds of wildfires burning across Canada has drifted thousands of miles and nearly circled the entire ...

Canadian wildfires burning across northern Manitoba and Saskatchewan are sending smoke through central Canada, the Great ...

Hundreds of wildfires still burning in Canada are expected to undermine air quality across the Upper Midwest and Northeast into Tuesday. At least 738 wildfires are currently burning in Canada, with at ...

Air quality alerts are in effect in the Philadelphia area, fueled by smoke from wildfires that are burning thousands of miles ...

As Canada grapples with one of its worst wildfire seasons on record, smoke from the blazes have prompted air quality alerts across the U.S.

Researchers have known about the health effects of air pollution for more than a century. The 1948 “Donora smog” in a ...

Canada wildfire smoke brings unhealthy air to large swaths of the Midwest Air quality alerts were in effect in Iowa, Minnesota, Wisconsin and Michigan.

Smoke from wildfires blazing across Canada is once again wafting over huge portions of the U.S. Midwest and worsening air quality there. On August 1 conditions are particularly bad in Minnesota ...