Scientists have discovered a mysterious hole on the surface of Mars, and they have no idea what lies inside it. This pit, ...

The United States has a habit of showcasing its geology. Long before cities and highways showed up, forces beneath the ...

As someone who's been to all 63, I think Death Valley, Dry Tortugas, and Joshua Tree are some of the best US national parks to visit in the winter.

Trump exempted the smelter in Arizona from complying with limits on lead, arsenic, chromium and other hazardous pollutants ...

Scientists have identified eight mysterious water-shaped caves on Mars, unlike volcanic tunnels, raising fresh hopes these ...

Planet Earth has a way of crafting landscapes that seem to belong in a science fiction movie rather than on our own home soil. From stones that move on their own to mountains that look like chocolate ...

There is a unique sensation that surfaces when you find yourself standing near the edge of a great height. It is a mix of raw ...

It was a big year. I had been emboldened by my success in completing the Moab 240 run, and then the Cocodona 250-mile run, ...

Think you’ve got what it takes? From icy swims to grueling mountain climbs, these are the world’s toughest triathlons set to ...

The Aloha Stadium Swap Meet in Aiea stands as Hawaii’s ultimate bargain paradise, where savvy shoppers fill car trunks with island treasures without emptying their wallets.

Sports, travel, food and history. Arizona is a special state. Be a tourist in your town and explore these 7 uniquely Arizona ...

TUCSON, Ariz. (KVOA) - A team from the University of Arizona has discovered that life can begin anew even on fresh lava following volcanic eruptions in Iceland. The researchers observed how tiny ...