The restrictions help manage the continued influx of visitors at places, like Yellowstone and Acadia.
A Seattle-area program is trying to remove one of the barriers to getting outside, and out of town, by offering affordable transportation.
You don't have to major in environmental sciences.
Can't take your eyes away? You're not the only one.
The account seemingly responds to the president's statement about environmentalism.
A conversation with famed mountaineer Conrad Anker.
Early numbers show more than 300 million visits in 2015, a new record.
Much of that money is needed to repair the National Mall in Washington.
President Obama is expected to name five new national monuments on Monday. In addition to historical significance and land preservation, national monuments can boost local economies through tourism.
Yosemite ranger Kari Cobb talks about how the national parks are preparing for their upcoming week of free admission.
