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

Editors' photo challenge For our July Editors photo challenge, we set our sights on "Landscape Photography" and asked you to ...

At the top of Yosemite National Park's Vernal Fall on a recent holiday weekend, amid the throngs of tourists snapping photos ...

A new study suggests a meteor strike that created Arizona’s Meteor Crater 56,000 years ago may have triggered a massive landslide in the Grand Canyon, blocking the Colorado River and forming a 50-mile ...