Discharging a firearm inside Yellowstone National Park is illegal, as is letting your dog run loose. So it's no surprise that rangers are looking into reports that a man broke both those rules when he took aim with his shotgun at some wolves said to be chasing his dog.

Yellowstone National Park escaped the summer without any large conflagrations in its forests, but that could be an anomaly under the current pace of climate change. Pikas could vanish from parks such as Lassen Volcanic and Great Basin. Glaciers and Joshua trees could be seen only in photographs and paintings in their namesake parks, and Virgin Islands and Hawai'i Volcanoes national parks could see diminished rainfall.

A man who walked out to the vent of Old Faithful Geyser in Yellowstone National Park might have also dipped his feet into a hot spring near Norris in the park, according to another video.