SANTA CRUZ, CA–A new study suggests that ancient features on the surface of Mars called valley networks were carved by recurrent floods during a long period when the martian climate may have been much ...

Earth's valleys tell an ancient story of ice and power. Over millions of years, massive glaciers have carved, sculpted, and transformed the landscape in ways that still take researchers' breath away.

Kayakers and nature lovers are flocking to Death Valley National Park in California to enjoy something exceedingly rare at one of the driest places in the United States: Water. A temporary lake has ...

Tenaya Canyon and part of Yosemite Valley as seen from Glacier Point in Yosemite National Park. Tenaya Creek likely started to scour this granite canyon below Half Dome about 5 to 10 million years ago ...

(CNN) – Tourists are flocking to one of the hottest places on Earth to witness something quite unusual. A temporary lake has appeared right in the middle of one of the driest regions in the U.S.