Multiple U.S. states and Canadian provinces are experiencing poor air quality from wildfire smoke. Here's where.

The Dragon Bravo Fire burning inside Grand Canyon National Park has destroyed dozens of structures, including a beloved and ...

Wildfires have scorched hotspots in several Mediterranean countries this month, with blazes forcing thousands of people into ...

Greenhouse gas emissions, mainly from burning coal, oil and gas, have heated the planet by about 1.3 degrees Celsius since ...

The Grand Canyon was formed with the shifting of tectonic plates, which lifted layers of rock into a high and relatively flat ...

The Dragon Bravo Fire has destroyed dozens of structures and a water treatment facility, and the White Sage Fire, located in ...

At least four firefighters have been injured over the last week while battling three wildfires in Northern California forests ...

Two large wildfires in Northern California, one near Shasta Lake, continue to burn amid extremely hot weather, sending smoke ...

Additional plumes of smoke from Canada's active wildfires prompt officials to issue a statewide air quality alert on July 14.

Heavy winds that swept through Black Canyon of the Gunnison National Park on Sunday night started “rapid fire spread” after a ...

The Chicago area recorded ozone levels of 156 late Monday afternoon. Levels above 100 are considered unhealthy. Residents ...

At least four uncontained wildfires burning across Colorado’s western slope on Sunday, which together have destroyed ...