Smoke from Canadian wildfires again plagued portions of the northern United States on July 16, prompting air quality alerts from Illinois to Maine.

A researcher from the University of Saskatchewan is looking into how wildfires are impacting bird physiology during migration ...

World Cup being hosted by Canada, Mexico and the United States is less than a year away and FIFA’s protocols for matches ...

Smoke from wildfires in Manitoba, a Western province facing its worst fire season in 30 years, has created hazardous air ...

Smoke from ongoing Canadian wildfires in Saskatchewan and Manitoba will be ushered into the Great Lakes regions, causing a hazy sky and air quality alerts in the thickest smoke ...

Six Republican Congress members callously urged Canada to take “proper action” to mitigate smoke wafting into the U.S.

P lenty of research shows that respiratory distress and heart attacks spike in the event of smoke exposure; acute impacts of ...

As wildfire smoke travels through the atmosphere, it also changes chemically to produce the toxic gas ozone, making breathing the stuff even more hazardous.

Continued drifting of wildfire smoke from Canada and Alaska has prompted Bay Area air regulators to extend an air quality advisory through Monday.

GOODLOW, British Columbia — Smoke was darkening the skies, and flames from an out-of-control wildfire ripping through this remote stretch of western Canada were creeping ominously close to the ...