Welcome to the Desert View Watchtower, Arizona’s crown jewel of vantage points. Perched on the South Rim of the Grand Canyon, ...

The resulting lunar map is constantly evolving. Over time, new names are added while existing names are dropped or changed after research shows a feature to be of a different geological type ... from ...

In 2018, the United States Geological Survey reported it estimated there was 680,000,000 acre feet of brackish water under Arizona. That represents what Arizona uses in 100 years.

Cameron Duke of MinuteEarth explained how certain rivers allow for canyon formation due to specific geological conditions.

"The Grand Canyon is an epic Rosetta Stone for geology," Denver Museum of Nature and Science geologist James Hagadorn said.

“We’re used to long dry stretches out here in the Southwest due to our seasonality and precipitation,” said Michael Crimmins, ...

Armed with advanced technology, decades of expertise, and insights from an NSF-funded study, a multi-institution team of ...

On Nov. 5, voters across the U.S. cast final ballots that will set the direction of the country, state and local municipalities for years to come. Heading into Election Day, Democrat Kamala Harris ...