Biologists agree the Grand Canyon contains five ecosystems: the Canadian, Hudsonian, Transition, Upper Sonoran and Lower Sonoran. To see these ecosystems outside of the canyon you would have to ...

The National Weather Service put an extreme heat warning in effect from Saturday morning through Sunday evening for areas in the Grand Canyon below 4,000 feet.

With its long history as the United States' first-ever national park, Yellowstone is a favorite among those seeking to admire wildlife in the U.S. However, Yellowstone offers much more than ...

Formed over thousands of years of erosion caused by hydrothermal activity, water and other natural forces, the Grand Canyon of the Yellowstone ... including the 109-foot Upper Falls and the ...

The lower is on the left, and the upper is on the right. It’s about an hour and a half from the Grand Canyon, two hours from ...

Guided tours of Antelope Canyon are available through a variety of providers, and most offer an upper canyon and lower ... about 130 miles northeast of the Grand Canyon's North Rim and just ...

GRAND CANYON NATIONAL PARK — A shot of cold water from Glen Canyon Dam appears to have stalled a smallmouth bass invasion of the Grand Canyon and protected rare Colorado River fish there ...

One of the best-known national parks in the United States, the Grand Canyon attracts roughly five million visitors every year. People from all over the world come to northern Arizona to see the ...