Finished in 1963, Glen Canyon Dam in Arizona remains at the center of an environmental and cultural controversy.
Federal proposals being considered could slash Central Arizona Project water deliveries — which Tucson uses to supply ...
Lake Mead is no longer just a shrinking blue patch on a map of the Southwest, it is a barometer of how climate stress, legal ...
The five states with the most state parks in America are spread all across the country, including spots on both the East ...
The western U.S. is a geologists' dream, home to the Rocky Mountains, the Grand Canyon, active volcanoes and striking sandstone arches. But one landform simply doesn't make sense.