Groundwater at depths of several hundred meters or more can be hundreds of millions of years old and are often thought of stagnant and isolated from the atmosphere and the water cycle—a reason these subsurface areas are ...
Earth Sciences
Jul 20, 2022
0
98
It's a riddle that has both blessed California and still raises worries for the future: Why hasn't L.A. seen a big San Andreas earthquake in generations? And what does that mean when it does come?
Earth Sciences
Jun 13, 2023
0
220
Where does the water in the Grand Canyon come from?
Environment
Jan 24, 2020
0
102
This image from the Landsat-8 satellite acquired on 23 September 2014 brings us over the southwest United States: Nevada and Arizona.
Earth Sciences
Feb 13, 2015
0
33
The reintroduction of wolves in Colorado this month will proceed as planned after a federal judge on Friday 15 Dec. denied ranchers' request to stop the state's efforts to allow for further environmental analysis.
Plants & Animals
Dec 18, 2023
4
32
The Colorado River Basin provides freshwater to more than 40 million people within the semi-arid southwestern United States, including major cities such as Las Vegas and Los Angeles. However, between 2000 and 2021 the basin ...
Kathleen Ferris stared across a desert valley dotted with creosote bushes, wondering where the water will come from to supply tens of thousands of new homes. In the distance, a construction truck rumbled along a dirt road, ...
Environment
Dec 29, 2022
2
180
Another Western state has decided it will not provide wolves for Colorado's reintroduction efforts, citing federal regulation and disagreements about how wolves should be managed.
Plants & Animals
Jul 24, 2023
0
74
Unaweep Canyon is a puzzling landscape—the only canyon on Earth with two mouths. First formally documented by western explorers mapping the Colorado Territory in the 1800s, Unaweep Canyon has inspired numerous hypotheses ...
Earth Sciences
Mar 19, 2015
4
47
In the 15 years since Adam Dailey began boating on Lake Mead, the shoreline has receded hundreds of meters, the result of more than two decades of punishing drought that is drying out the western United States.
Environment
Jul 3, 2022
0
67
