Smoke from wildfires in Canada has spread more than 5,000 miles, reaching parts of Russia and Europe during the past week.

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

Wildfire smoke from Manitoba, Canada, will blow across two dozen states through Saturday, reducing air quality and creating hazy skies.

Wildfires are already burning in parts of Canada, and as they do, many communities are already facing the familiar thick haze ...

Smoke from Canadian wildfires is engulfing much of the eastern and central United States and and is expected to continue for days.

Wildfires scorching several Canadian provinces have driven at least 33,400 people from their homes, with smoke now reaching all the way to Europe.

Massive wildfires burning out of control in western and central Canada are forcing thousands to flee. The blazes are also sending hazardous smoke toward major cities in the United States.

More than 200 wildfires are raging across Canada, sending a thick blanket of choking smoke through the U.S. Midwest. Experts says climate change means U.S. residents better get used to it.

Some leave on their own. But there are others who choose to stay, including many farmers who do not want to surrender their ...

Smoke poured over the Canadian border into eastern Alaska this weekend, bringing poor air quality to communities from ...

Health specialists were put on leave, and a report on how to protect 20 million workers from wildfire smoke has stalled ...

Canada still has time to lead — not just in firefighting, but in foresight. To invest in our forests, respect our waters, ...