Add Yahoo as a preferred source to see more of our stories on Google. Thick, choking plumes of smoke from wildfires in Canada are pouring into major cities across the Midwest, Northeast and ...

Massive plumes of Canadian wildfire smoke are pouring over the border into the United States, bringing dangerous air quality to more than 120 million people in the Midwest and Northeast. The polluted ...

Thick, choking plumes of smoke from wildfires in Canada are pouring into major cities across the Midwest, Northeast and mid-Atlantic, bringing dangerous air quality to more than 100 million people.