The National Interest is an award-winning online publication focusing on defense issues, national security, military affairs and hardware, foreign policy, and U.S. politics. The National Interest ...

The Colorado Plateau is home to 26 national monuments that protect lava flows, dinosaur fossils, sandstone bridges, Ancestral Puebloan villages, tribes’ homelands, and more. They range in size from a ...

The city of Flagstaff has taken big steps to preserve the clarity of its night sky. Find out the best ways to experience the ...

Discover otherworldly dunes, desert canyons, lofty amusement parks, and a surprising number of waterfalls and hot springs in ...

The American Library Association awarded Flagstaff author Kevin Fedarko with the prestigious Carnegie Medal for Excellence in ...

Arizona may officially be the Grand Canyon State and for good reason. But there are other nicknames associated with the state ...

Learn about the astounding megaflood that reshaped the Mediterranean. Discover the evidence of this ancient catastrophe and ...

The Mariana Trench is the deepest place on Earth, and we're still in the dark about much of the life that calls it home. Here are just a few of the trench's eye-popping residents.

FILE - Interior Secretary Deb Haaland speaks during an event to commemorate World Wildlife Day and announced during her speech that her agency will work to restore more large bison herds to Native ...

One of the snowiest towns in America is found in one of the country's hottest states. This charming mountain retreat offers winter fun for the whole family.

GRAND CANYON NATIONAL PARK, AZ (AZFamily) — People can once again enjoy a hike at Arizona’s world-famous natural wonder. The National Park Service said on Wednesday evening that inner canyon ...

GRAND CANYON NATIONAL PARK, Ariz. – A chlorine gas leak at Grand Canyon National Park’s main water supply has forced park officials to close all inner canyon corridor trails. Officials said ...