Earth Notes
Every Wednesday
Earth Notes, KNAU’s weekly environmental series, explores the Colorado Plateau by telling stories of the intricate relationships between environmental issues and our daily lives. Rooted in science and wrapped in human interest, the two-minute-long segments encourage listeners to think of themselves as part of the solution to environmental problems.
Latest Episodes
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High summer temperatures make Flagstaff’s thin air feel even thinner. Density altitude affects your body, turning a simple mountain hike into a tough physical workout. -
The San Francisco Peaks volcanic system includes some tiny residents — small, rare plants that grow in difficult terrain. Citizen scientists are trying to document them. -
Have you ever noticed a large, fuzzy, brightly-colored ant moving rapidly along the ground? Commonly called velvet ants, these aren’t ants at all. They’re actually wingless wasps. -
Three decades ago, the use of cloud seeding to enhance precipitation over the region was tested as part of a large field experiment. -
Paleontologists exploring the Zuni Basin of western New Mexico in the 1990s uncovered a turtle fossil shell that was later determined to be an entirely new species. -
Quicksand can form in rivers and washes across the Colorado Plateau. Conditions beneath the surface can create unstable ground and potential hazards. -
An animal spread flat on its stomach, legs and feet extended, is exhibiting a behavior called “splooting.” -
Jaguars are usually associated with the tropics of Central and South America, but historical records show they once prowled as far north as the South Rim of Grand Canyon. -
How did Southwest Tribal people protect and store their food before the days of refrigeration? -
April in northern Arizona is heralded by the loud metallic wing trills of broad-tailed hummingbirds returning from winter in the Highlands of Mexico and Central America.
