The Manitoba wildfires have forced 17,000 people to flee the province. Plumes of heavy smoke are expected to drift into the United States over... Thick, billowing clouds of smoke are sweeping south ...

Billowing smoke and orange haze intruded on tourist photos at Grand Canyon National Park after wildfires burned in the area on July 13. Two wildfires continued to burn in northern Arizona through the ...

Thick, billowing clouds of smoke are sweeping south from wildfires ravaging the central Canadian province of Manitoba into parts of the United States, compromising air quality for millions of ...

Clouds of wildfire smoke like this one in Flin Flon, Manitoba, are wafting into the Northern Plains and Midwest. (Government of Manitoba | Anadolu via Getty Images) Thick, billowing clouds of smoke ...