From exploring Arizona canyons to Utah buttes and beyond, our national parks columnist shares the most adventurous Southwest ...

The American Southwest is a geographic region made up of unique natural wonders, with canyon after canyon, and cacti after ...

CAPE CANAVERAL, Fla. — (AP) — New research shows that when an asteroid slammed into the moon billions of years ago, it carved out a pair of grand canyons on the lunar far side. That's good ...

The extraordinary formations, each comparable in size to Earth’s Grand Canyon, are hidden on the far side of the moon — the side that always faces away from Earth — near the lunar south pole ...