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.
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.