Thomas Daniel Gibbs, 35, of New Jersey, went missing in the Grand Canyon days before a mega-fire was declared, remaining ...

Both it and the Monroe Fire, burning further north near Monroe, Utah, are generating pyrocumulus clouds — sometimes called ...

Two wildfires burning in the western United States are so hot that they're spurring the formation of "fire clouds" that can ...

Two wildfires burning in the western United States — including one that has become a “megafire” on the North Rim of the Grand ...

The wind-whipped wildfire in Arizona and another in Utah are so hot that they’re spurring the formation of “fire clouds” that can create their own erratic weather systems.

A national park in southwest Colorado partially reopened Wednesday for the first time since a fire broke out earlier this ...

The Dragon Bravo wildfire that has been burning on the North Rim of Grand Canyon National Park spread significantly over the ...

The wildfire that destroyed the historic Grand Canyon Lodge​ earlier this month has expanded in recent days, fueled by hot, ...

A USA TODAY analysis found more than 600 fires that burned at least partly inside national parks in the past four decades.