This story was originally published by Grist with the headline As California burns, new research shows smoke is wildfire’s ...

Wildfire smoke returns to Minnesota on Sunday, sweeping in from the northwest to the southeast. An air quality alert is in ...

Smoke from hundreds of wildfires in Canada has choked the skies over dozens of northern U.S. states in the Great Lakes and ...

Small particles can get lodged in crevices of organs from lungs to arteries, causing inflammation and other health issues.

Canadians have pushed back against the criticisms. This week, Manitoba Premier Wab Kinew accused the Midwest lawmakers of ...

The National Weather Service says Canadian wildfire smoke will return to Michigan Monday. Residents in northern Michigan should take precautions.

The wildfire areas of Manitoba and Saskatchewan are projected to receive 50 millimeters to 100 millimeters of rain this ...

Wildfire smoke doesn’t just cloud the horizon, it can chemically change the air at ground level and in layers of the ...

Hazy skies settled over Hampton Roads this week as smoke from wildfires in Canada moved over the region. For the past week, ...

Wildfire smoke can cause eye and throat irritation, coughing, wheezing, and shortness of breath — even for healthy people. It ...

Smoke drifting south from Canadian wildfires has made skies in Pennsylvania and other states hazy this week. The Pennsylvania ...

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