If you plan this coming weekend to visit one of the 147 units of the National Park System that charge entrance fees, you can spend your money some other way. This weekend will be entrance-fee-free across the park system.

A 25-year-old Oklahoma man is thought to be missing in Yellowstone National Park, officials said Tuesday.

Two hikers who were exploring the backcountry of Glacier Bay National Park are recovering today from injuries sustained when ice from a calving glacier struck them.

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.