About 200 fires are actively burning in Canada and have consumed about 19,900 square kilometres of terrain, most of it in the ...

Smoke from Canadian wildfires has carried another day of poor air quality south of the border to the American Midwest.

Parts of Canada are seeing some of their most unhealthy air yet, and the smoke is likely to move over the United States again ...

Scientists are using new techniques to identify previously undetected layers of cloud in the atmosphere, layers which will ...

Smoke from Canadian wildfires carried another day of poor air quality south of the border to the American Midwest. Huge ...

It is not expected to bring similar health concerns in Europe, with surface-air ... don't provide enough filtration. Canada is having another bad wildfire season, and more than 27,000 people ...

Hedge funds boosted their bullish stance on US crude by the most in five months as wildfires endangered Canadian flows and ...

Many fires burning across Canada, forcing evacuations and threatening air quality in the United States, cannot simply be put ...