National Parks

Researchers at Iowa State and Cornell universities looked at more than two decades of data on ozone pollution at 33 parks.

The park service received more than 109,000 comments on the proposal, most of them opposed, during a two-month comment period that ended in late December.

The agency estimates the increase would generate an additional $70 million to help address backlogged maintenance and infrastructure projects.

Officials say the higher fees are needed to address a backlog of maintenance and infrastructure projects.

Overall visitation to national parks is on track to surpass 325 million in 2016, breaking last year's all-time high of 307 million, federal figures show.

Winter activities at Yellowstone National Park are coming to a close.

Visitors to America's national parks will encounter fewer rangers, find locked restrooms and visitors centers, and see trashcans emptied less often if 5 percent across-the-board federal budget cuts are enacted.

CHEYENNE, Wyo. (AP) — Large areas of Yellowstone, Yosemite and Glacier national parks could remain closed to summer traffic weeks later than usual, while visitor centers and campgrounds at several other national parks might have to close...

The National Parks Service is helping people celebrate the first day of summer this Tuesday by waiving entrance fee to all national parks for non-commercial vehicles.

The summer travel season kick-off is this weekend, and according to one consumer survey (Deloitte), half of us want to get away, at least for an overnight trip. Yellowstone National Park’s busiest season is summer, and while not all roads are open yet, visitors are welcome this weekend. Craig Mackey with the Outdoor Industry Association is encouraging people to visit a national park this summer to