The North American boreal forest covers more than one billion acres in Canada.
Seemingly endless wildfires in 2023 introduced millions of people across North America to the health hazards of wildfire smoke.
People are urged to stay aware of bad air-quality days as the wildfires still rage.
Montana has dispatched emergency crews to help fight raging wildfires north of its border.
Summer has come with an unwelcome visitor: periods of thick, smoky air brought on by Canadian wildfires.
Periodic smoky air from Canadian wildfires is getting attention over public health concerns.
The potential expansion of a fracked-gas pipeline in the Northwest faces growing resistance.
An air quality advisory for most of eastern Colorado remains in effect until at least 4:00 p.m. Sunday.
An air quality advisory for eastern Colorado remains in effect until at least 4:00 p.m. Saturday.
Eastern Colorado is under an air quality advisory until at least 4:00 p.m. Friday.