"Pastor Bill" was found as if he were crucified, according to the Maricopa County Attorney's Office. The accused had a list of 14 Christian targets.

A new study suggests ancient wood floated into a cave far above the Colorado River when a meteorite-induced earthquake triggered a landslide, a dam, and an ancient lake.

Scientists find a link between Barringer Crater and Grand Canyon landslide. Research indicates both events occurred around 56,000 years ago. A meteor impact may have triggered a cliff collapse. This collapse created a natural dam on the Colorado River.

Two separate cases of zoonotic diseases, hantavirus and rabies, were confirmed at Grand Canyon National Park. A park employee tested positive for hantavirus, while a bat found near the Colorado River tested positive for rabies.

An upcoming episode of the PBS documentary series “Human Footprint” focuses on the Colorado River and premieres in Flagstaff Friday night.

GRAND CANYON NATIONAL PARK, Ariz. — A wildfire that tore through a historic Grand Canyon lodge and raged out of control Monday had been allowed to burn for days before erupting over the weekend, raising scrutiny over the National Park Service’s decision not to aggressively attack the fire right away.

It's the second year in a row the Colorado River has topped the list from American River, this time for ecological threats in the Grand Canyon.

A solo backpacker has been found dead near a rugged and remote trail along the Colorado River in Grand Canyon National Park, authorities in Arizona say.