A massive landslide would have dammed the Colorado River, forming a deep lake that has since dried up. A meteorite impact thousands of years ago may have triggered a landslide in the Grand Canyon and reshaped the Colorado River that runs through the national park.

Wildfires burning at or near the Grand Canyon's North Rim are still raging as strong winds, high heat and low humidity persist.

U.S. land managers have long known that they have a problem on their hands with overgrown forests and persistent drought.

Researchers have found a link between two geological events in iconic locations of the U.S. Southwest that scientists previously didn't think had anything to do with each other.

Watt and Braman entered the league together in 2011, with Watt being the No. 11 overall pick in the draft that year. As of this writing, Braman's GoFundMe has raised over $88,000, which is well past the initial goal of $25,000.

Wildfires can burn and spread differently depending on what vegetation they burn. The two fires in northern Arizona have varied landscapes. Ponderosa pine trees grow near the North Rim of the Grand Canyon and can live for hundreds of years.

The Dragon Bravo Fire started on July 4 and was managed at first as a controlled burn. Then the wind picked up, and it quickly became uncontrollable.