A year-old grizzly has been killed in a hit-and-run accident along the western border of Yellowstone National Park, marking the second time in a week motorists have run into bears in the park.
What is the role of national parks? Are they created and designed to preserve nature, or to serve as playgrounds for the public? In Australia, one group it's the former, and they're rising in opposition to a move to promote tourism in their parks.
A single bolt of lightning struck nine visitors at Yellowstone National Park who were waiting to see Old Faithful erupt.
Throughout the year my mailbox is filled with solicitations from various causes, among them national park-related events and projects. Here's a look at just some of the latest you might consider giving to.