Valles Marineris in imagery captured the Mars Reconnaissance Orbiter. Global topography: NASA/GSFC CTX global mosaic: NASA/MSSS/Caltech/ CTX topography: NASA/MSSS/USGS HiRISE: NASA/U.Arizona/USGS/Amaz ...

The agreement that will allow the mining company to ship ore from its mine near the Grand Canyon to a mill in Utah.

Environmental Day at the Arizona Legislature, conservation advocates talked about the issues they wanted lawmakers to address.

The route from Pinyon Plain Mine near the Grand Canyon to White Mesa Mill near Bluff ... Nygren issued an executive order requiring Energy Fuels to sign an agreement with the tribe before hauling ...

NASA’s Perseverance rover is making history by collecting handpicked Martian samples for future return to Earth. Scientists are eager to study these specimens to unlock secrets about Mars’ ancient ...

In the face of misleading statements about universal school vouchers, Wyoming’s citizens must seek the truth, guest columnist Amy Caldwell opines.

A Netflix documentary series visits the disappearance and death of the travel vlogger, whom officials say was killed by her ...

Measure your progress in drainages rather than miles as you contour the Tonto Trail in the Grand Canyon. Most trails in the Grand Canyon ... westward to the Bright Angel Trail. A wooden sign south of ...

The construction of Glen Canyon Dam gave rise to Lake Powell, and more than 10 years after the Colorado River backfilled behind the 710-foot-high dam, Glen Canyon National ... this engineering marvel, ...

Led by Rayshon Harrison's 19 points, the Grand Canyon Antelopes defeated the UT Arlington Mavericks 82-75 on Saturday.

Protesters gathered outside Flagstaff City Hall on Monday afternoon to speak up against the transportation of uranium ore ...