A national park in southwest Colorado partially reopened Wednesday for the first time since a fire broke out earlier this ...

The collision of a meteorite in what is now Arizona left an indelible mark: Meteor Crater. At nearly the same time, a massive landslide blocked the Colorado River, creating a temporary lake in ...

A massive landslide would have dammed the Colorado River, forming a deep lake that has since dried up. A meteorite impact ...

New research links the impact at Meteor Crater to a Grand Canyon landslide that may have created an ancient lake 56,000 years ...

No Ancient Egyptian artifacts have ever been found in the Grand Canyon. Archaeological findings and indigenous accounts thoroughly document the cultures that lived in the Grand Canyon area. The ...

The South Rim Fire at Black Canyon of the Gunnison National Park continues to burn weeks after it started from lightning ...

A fast-moving wildfire destroyed a historic lodge and dozens of other structures on the Grand Canyon’s North Rim, forcing ...

Drought, a warming climate and decades of firefighting policies that suppressed natural fires have turned many grasslands and forests across the West into tinderboxes.

The U.S. Bureau of Reclamation should start planning to modify the Glen Canyon Dam, which plugs the Colorado to form Lake ...

A wildfire in western Colorado more than quadrupled in size overnight, quickly becoming the largest blaze burning in the state. The Turner Gulch Fire burning about 8 miles northeast of Gateway ...

Two archaeologists clad in neon yellow shirts with notebooks in hand moved through the wildfire’s path, taking notes as they ...

Researchers led by a team at the University of New Mexico suggest that a large meteor triggered a massive landslide in the ...