US state negotiators are battling over how to manage dwindling water resources in the Colorado River Basin, a lifeline for ...

A recent study from the University of New Mexico has proposed a fascinating theory about the formation of the Grand Canyon.

Colorado specialists are monitoring water, decontaminating boats and educating the public to keep invasive zebra mussels from ...

Karl Karlstrom, a geologist recently retired from the University of New Mexico, grew up in Flagstaff, Arizona. Grand Canyon ...

When we think of the Colorado River, we think of its power and its beauty, running from the rugged peaks of the Rocky Mountains and twisting, turning, and splashing through seven western states and ...

Grand Canyon National Park is easing both fire and water restrictions, due to improved water storage and system reliability.

An invasion of smallmouth bass from the Great Lakes region is spreading to new areas of the Colorado River in Arizona. The bass have already thwarted efforts to save threatened native fish in the ...

Photographer and filmmaker Pete McBride and adventure writer Kevin Fedarko will appear at UB on Nov. 11 as part of the ...

The valley of the Colorado -- Mesas and buttes -- Mountains and plateaus -- Cliffs and terraces -- From Green River City to Flaming Gorge -- From Flaming Gorge to the Gate of Lodore -- The Canyon of ...

Geologists reach sites within the Grand Canyon that tell the story of the continent's formation. After four days of navigating the Grand Canyon, Karl and Laura arrive at the places that tell the story ...