Earth Notes

By KNAU Arizona Public Radio

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... more

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FAQs about Earth Notes:

How many episodes does Earth Notes have?

The podcast currently has 79 episodes available.

Earth Notes episodes:

June 03, 2026 Earth Notes: Density Altitude
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.
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2min
May 27, 2026 Earth Notes: Arizona Flora Finders
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.
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2min
May 20, 2026 Earth Notes: Velvet Ants
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.
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2min
May 13, 2026 Earth Notes: Cloud Seeding Over Mingus Mountain
Three decades ago, the use of cloud seeding to enhance precipitation over the region was tested as part of a large field experiment.
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2min
May 06, 2026 Earth Notes: Zuni Turtle
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.
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2min
April 29, 2026 Earth Notes: Splooting
An animal spread flat on its stomach, legs and feet extended, is exhibiting a behavior called “splooting.”
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2min
April 29, 2026 Earth Notes: Quicksand on the Colorado Plateau
Quicksand can form in rivers and washes across the Colorado Plateau. Conditions beneath the surface can create unstable ground and potential hazards.
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2min
April 15, 2026 Earth Notes: Grand Canyon's Jaguars
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.
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2min
April 08, 2026 Earth Notes: Ancient Food Preservation
How did Southwest Tribal people protect and store their food before the days of refrigeration?
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2min
April 01, 2026 Earth Notes: Feeding Hummingbirds
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.
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2min

FAQs about Earth Notes:

How many episodes does Earth Notes have?

The podcast currently has 79 episodes available.