USGS

USGS

This weekend, managers at Glen Canyon Dam will begin a first-of-its-kind experiment to release water that benefits bugs, which play a vital role in the Colorado River ecosystem. KNAU’s Melissa Sevigny reports.


National Park Service

Scientists have made the first-ever map of how tamarisk beetles have spread into the Grand Canyon from other states. The leaf-eating beetles were introduced to control the invasive trees. But as KNAU’s Melissa Sevigny reports, they weren’t supposed to survive as far south as Arizona.

Aaron Siirila, CC

The phrase ‘"Black Death" conjures horror for the sheer number of people who died from plague in medieval times. But, the same disease poses a modern threat to wildlife across the Southwest. 


Katie Walton-Day/U.S. Geological Survey via AP, file

U.S. scientists studying the effects of uranium mining around the Grand Canyon say they are lacking information on whether the radioactive element is hurting plants, animals and a water source for more than 30 million people.

NASA/JPL/University of Arizona/USGS

A Flagstaff geologist found eight massive ice sheets on the planet Mars, using images from a NASA spacecraft. It’s the first detailed look at the layered structure of Mars’ ice. KNAU’s Melissa Sevigny reports. 


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