If you're planning a trip to Arizona's Grand Canyon, don't forget to check out this nifty little pool in its depths. But be ...

If you've already seen the Grand Canyon, make your way to this North American canyon that's even bigger (and that actually ...

Since it entered the American consciousness, the Grand Canyon has provoked two major ... a heat-induced imbalance of salts and minerals, which, left untreated, could result in death.

Ryan Crow of the U.S. Geological Survey (USGS) gave a talk to a packed crowd at the Museum of Northern Arizona Jan. 12 ...

The Grand Canyon is the biggest canyon on earth ... mining claims were allowed wherever a prospector thought a valuable mineral might be found. Stephen Mather, the director of the National ...