Canada is having another bad wildfire season, and more than 27,000 people in three provinces have been forced to evacuate.

Dust isn't the only threat out there, especially for those with respiratory problems. Smoke from Canadian wildfires is moving ...

Smoke from Canadian wildfires carried another day of poor air quality south of the border to the Midwest, where conditions in ...

It is based on ground ... flares of their underlying disease, and that's usually COPD and asthma.” What happens, Strykowski said, is that the fine particulate matter from the wildfire smoke ...

Smoke from Canadian wildfires dipped as far ... When that happens, the dust can get caught in raindrops and settle on the ground. Once it dries, it might leave a residue — brown dust on cars." ...