A new tribal national park in North Dakota is opening a little-seen area of the rugged Badlands to hikers and other outdoors ...

Established by President Theodore Roosevelt in 1906, Mesa Verde was the first national park created to preserve the works of man. Mesa Verde National Park also became a UNESCO Wor ...

After visiting all 63 national parks in the US, my favorites include Yosemite and Grand Teton. I think one of the worst parks ...

ABC News joined The Arbor Day Foundation and the Altadena nonprofit Amigos de los Rios to discuss replanting and preserving ...

A report shows Organ Mountains-Desert Peaks on the chopping block to lose federal protection as a national monument ...

In northeastern California, the Upper Pit River undulates through evergreen forests, wet meadows and rugged mountains. It’s ...

Interior Department officials are considering scaling back the boundaries of national monuments in the West to encourage energy development on public lands.