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

Researchers have found a link between two geological events in iconic locations of the U.S. Southwest that scientists ...

Learn how the Grand Canyon used to be home to an ancient evolutionary competition that has since left behind a plethora of ...

Two of Arizona's most famous landmarks may be linked by cosmic violence: the asteroid that gouged out Meteor Crater may have ...

Cutting‑edge dating reveals driftwood high in Grand Canyon caves 55,250 years ago when a meteor’s shock wave blocked and ...

A new study suggests ancient wood floated into a cave far above the Colorado River when a meteorite-induced earthquake ...

A remarkable coincidence occurred 56,000 years ago, when the impact that created Meteor Crater triggered both a landslide-dammed lake and a paleolake formation in the Grand Canyon. Earth’s ancient ...

Squids first appeared about 100 million years ago and quickly rose to become dominant predators in the ancient oceans, according to a study published in the journal Science.

Tucsonans — then numbering about 20,000 people living in a dusty desert town — started to die in the spring of 1918 from a devastating flu.

2 Girls Were Buried in 'Dollhouse Graves' More than 100 Years Ago. A Paranormal Investigator Recently Visited Both (Exclusive) A paranormal investigator tells PEOPLE why the two sites are so special ...

From a new subdivision in Memphis to a fishing trip to Louisiana, here's a look back at what was making headlines in the Bluff City.

Researchers say holes in the clay that overlays the Memphis aquifer could have let pollutants from as early as the 1940s into the groundwater.