"A legacy of mining means that toxic metals could be carried along plumes of smoke." 

"More than 200 wildfires are blazing across central and western Canada, half of which are out of control because they’re so hard for crews to access, forcing 27,000 people to evacuate. Even those nowhere near the wildfires are suffering as smoke swirls around Canada and wafts south, creating hazardous air quality all over the midwestern and eastern parts of the United States. The smoke is even reaching Europe.

As the climate changes, the far north is drying and warming, which means wildfires are getting bigger and more intense. The area burned in Canada is now the second largest on record for this time of year, trailing behind the brutal wildfire season of 2023. That year, the amount of carbon blazed into the atmosphere was about three times the country’s fossil fuel emissions. And the more carbon that’s emitted from wildfires — in Canada and elsewhere — the faster the planetary warming, and the worse the fires.

More than 200 wildfires are blazing across central and western Canada, half of which are out of control because they’re so hard for crews to access, forcing 27,000 people to evacuate. Even those nowhere near the wildfires are suffering as smoke swirls around Canada and wafts south, creating hazardous air quality all over the midwestern and eastern parts of the United States. The smoke is even reaching Europe.

As the climate changes, the far north is drying and warming, which means wildfires are getting bigger and more intense. The area burned in Canada is now the second largest on record for this time of year, trailing behind the brutal wildfire season of 2023. That year, the amount of carbon blazed into the atmosphere was about three times the country’s fossil fuel emissions. And the more carbon that’s emitted from wildfires — in Canada and elsewhere — the faster the planetary warming, and the worse the fires."

Matt Simon reports for Grist June 5, 2025. [2]