Intense wildfires in Canada have sparked pollution alerts across ... as the air poses immediate and long-term health risks. Nasa said winds usually carry smoke from wildfires in the Quebec area ...

Plumes of smoke from the fires are so large, they have crossed the US and the Atlantic Ocean, carried by the jet stream, and have reached the skies of Europe. Nasa captured the high-altitude smoke ...

Only essential workers will be allowed into the La Cañada Flintridge facility, according to an emergency notice posted by ...

Intense wildfires in western Canada have sent huge plumes of smoke ... Wisconsin and other parts of the Midwest. The maps use ...