The Grand Canyon is Arizona's most famous landmark. Here's everything to know if you're going to visit, plus 10 interesting things to know.

The Canyon's Age Sparks Fierce Scientific Debate Scientists have spent over a century arguing about when the Colorado River first carved through the Colorado Plateau. A diverse set of geologic studies ...

Monday marks 108 years since the Grand Canyon was declared a National Monument. It's "the one great sight which every American should see," according to Theodore Roosevelt. As the only of the Seven ...

A rare total cloud inversion took place in the Grand Canyon on Thursday, filling the huge void with what looks like a rolling white fog. The event was captured in striking photos by the Grand Canyon ...

Visiting the Grand Canyon is already a classic American adventure, but you can get more out of your visit by staying at this ...

ALBUQUERQUE, N.M. (AP) — U.S. land managers are racing the clock as hotter, drier weather raises the risk of wildfires in the nation’s overgrown forests with each passing year. One tool is to use the ...