A wildfire burning in Grand Canyon National Park triggered a chlorine gas leak Friday afternoon after flames reached a water ...

A Grand Canyon water treatment facility located at the North Rim caught fire on Saturday, causing chlorine gas to be released ...

Authorities maintained the evacuation zones for the White Sage Fire north of the Grand Canyon as the fire grew expectantly.

A massive wildfire near Arizona 's Grand Canyon National Park erupted overnight, growing more than 20 times in the past 24 hours. Not just one, but two fires broke out within miles of each other.

Hurricane Valley firefighters have been deployed to the White Sage Fire, which is exhibiting “extreme fire behavior” as it ...

Most of Minnesota and parts of Montana, North Dakota and Wisconsin were ranked “unhealthy” for air quality on a U.S. Environmental Protection Agency map.

Parts of Grand Canyon National Park, a popular natural wonder in the western United States, remained closed due to two ...

A pair of rapidly growing wildfires in northern Arizona that have forced the temporary closure of parts of Grand Canyon National Park and prompted evacuations were burning uncontained on Saturday. ...

Much of the Upper Midwest on Saturday was dealing with swaths of unhealthy air due to drifting smoke from Canadian wildfires, ...

Access via the North Rim, a lesser-used gateway to the national park, was closed as the White Sage fire continued to burn on ...

Wildfires raging near the Grand Canyon's North Rim have prompted evacuations, air quality concerns and the closure of the North Rim of the national park.

Hundreds of visitors and residents were evacuated from the North Rim of Grand Canyon National Park this week as two wildfires ...