Yellowstone National Park has received an anonymous $40 million gift to fund affordable housing for employees. Affordable housing is an issue for national park employees across the country.
Authorities have been unable to find the bear that killed a woman near Yellowstone National Park late last month. The attack has renewed calls to take grizzlies off the endangered species list.
Last year, two neighboring states loosened restrictions on hunting wolves outside Yellowstone, resulting in a spike in deaths. Locally that's politically popular, but biologists see problems.
Big wildfires create their own weather, and can even spawn tornadoes swirling with smoke and flame. Researchers are trying to determine how often they occur.
Researchers who study evidence of fires through the millennia say to expect more and bigger fires as the climate continues to warm. Fire season is already months longer than in the 1970s.