In 2015 more than 10 million acres burned in the US, including more than 6300 wildfires in California and a 100 foot tall “firenado” in Idaho

According to most calculations, 2015 was a record-setting year for wildfires in the U.S. By the end, more than 10 million acres had burned across the country. Many of these were in the Western states, where hellish, otherworldly burns took over in normally temperate states like Washington and Alaska. In Boise, Idaho, a 100-foot-tall “firenado” sprouted from a blaze. California alone experienced more than 6,300 wildfires. The U.S. Forest Service recently named last year’s fire season as the worst in history. But this, according to some environmentalists, was a mistake — and one that’s only going to make the problem worse.

1,200 firefighters from as far away as New Zealand were dispatched to fight a single fire in Washington state in 2015, and firefighting now takes up more than 50 percent of the Forest Service’s annual budget — up from 16 percent in 1995.