The service is waiving the entrance fee this month for all 408 of its national parks, monuments, and other protected sites, including iconic landmarks like the Grand Canyon.
The U.S. Forest Service's annual budget for fighting wildfires is rapidly dwindling; in fact, it may run out by the end of the month: the fires, on the other hand, will keep burning.
Wisconsin, on May 14, saw its largest wildfire since 1980. Meanwhile, in California, another fire that began May 15 has blackened 3,800 acres.
One hundred and thirty fires blazed across New South Wales, Australia's most heavily populated state, as emergency teams evacuated national parks and fought to get the flames under control.