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Those tourism dollars often help keep local economies running, but there’s also major stresses on infrastructure that is not built to withstand the crowds.

New data shows that the number of rangers patrolling U.S. national parks is at its lowest level this century. This comes at a time when park visitation is rising and so are search-and-rescue calls.

The official nonprofit organization of the National Park Service is set to receive the largest grant in its history. It's a $100 million gift the fundraising group described as transformative for the country's national parks.

A new project asks travelers to donate to tribes whose homelands and sacred sites are occupied by parks and monuments. The goal is to compensate tribes connected to the land and to educate visitors.

Social media can influence everything from what we eat to where we vacation. Now, a new study shows it’s also driving more visitors to U.S. national parks, especially in the Mountain West.

A new report shows air pollution is affecting most national parks across the U.S., including parts of the Mountain West.

Federal officials are debating how to balance the economics of scenic air tours with the serenity of popular national parks. A committee in the U.S. House of Representatives discussed commercial management plans in areas like Mt. Rushmore and Glacier National Park.

Legislation to improve access to public lands and address issues related to rising usage has been introduced in the U.S. House.

Gates will be locked and thousands of rangers will be furloughed from national park sites if Congress doesn't reach a budget agreement. But Arizona and Utah officials say they'll make sure visitors can still enjoy the Grand Canyon and Zion Valley if a cutoff comes Sunday. This year, Colorado Gov. Jared Polis directed the state's Department of Natural Resources to develop a plan to operate and protect resources at Rocky Mountain National Park and three others.

A new report shows that visitors to national parks spent a record amount in surrounding communities last year, providing a major economic boost to those areas.