environment

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.

Courtesy

A massive alligator juniper tree near Prescott is believed to be the largest and oldest of its kind in the world. It’s survived hundreds, possibly thousands of years of fire and drought. Forester Ben De Blois says the tree’s unique growth pattern makes it hard to tell just how old.


Ryan Heinsius

Flagstaff residents and visitors can now use a smartphone app to borrow a bright orange bicycle. The six-month pilot program is run by a company called Spin, in partnership with the City of Flagstaff and Northern Arizona University. KNAU’s Melissa Sevigny reports.

Earth Notes: Wind Scorpions

Apr 18, 2018
Gary Alpert

The wind scorpion can be terrifying, both in looks and behavior. But despite the common name, it’s actually not a scorpion or a true spider.


Richard Spitzer

For the first time a bat has recovered from its status as an endangered species. The U.S. Fish and Wildlife Service plans to de-list Arizona’s lesser long-nosed bat. KNAU’s Melissa Sevigny reports.

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