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PODCAST

Earth Notes

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 wrapped in human interest, the two-minute-long segments encourage listeners to think of themselves as part of the solution to environmental problems.

science nature

All Episodes

2:00

Earth Notes: Southwestern Bumble Bees

Earth Notes ·

2024/09/18

Bumble bees are fuzzy, efficient and colorful pollinators. Arizona's mountains are home to a dozen species of bumble bees, out of nearly 50 native to North America and 250 worldwide.

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2:00

Earth Notes: World’s Largest Navajo Rugs

Earth Notes ·

2024/09/11

The Hubbell-Joe Navajo rug was woven out of hand-spun wool by the Joe Family in the 1930s. It was displayed at their Winslow trading outpost to attract tourists during the Depression. At 21 by 33 feet, it was the world’s largest Navajo rug.

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2:00

Earth Notes: Helping the Fall Bird Migration

Earth Notes ·

2024/09/04

Each spring and fall, migrating birds take on journeys that put Olympic athletes in the shade. For example, a Western Tanager weighing-in at around an ounce may fly from Western Canada to Central America.

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2:00

Earth Notes: Sinagua Suncatchers

Earth Notes ·

2024/08/28

At the Crane Petroglyph Heritage Site in the Verde Valley, visitors can reach through time for a glimpse of life in this place almost a thousand years ago.

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2:00

Earth Notes: Grand Canyon Dark Skies

Earth Notes ·

2024/08/21

Visitors awed by the size and beauty of the Grand Canyon often comment on how beautiful its night skies are, too. Many visitors get their first-ever sight of the Milky Way there – and night sky programs are the most popular run by the National Park Service, with attendance around five times higher than for geology presentations.

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2:00

Earth Notes: The Red-Faced Warbler

Earth Notes ·

2024/08/14

The bright face of the Red-faced Warbler can glow like a gem against its contrasting black crown and pale gray breast. Both males and females share this color pattern, though the females are slightly duller.

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2:00

Earth Notes: The Apache Red Hats

Earth Notes ·

2024/08/07

In the mid-20th century, perhaps no crew of firefighters was as famous as the Mescalero Apache “Red Hats" — the first all-Native American firefighting crew in the nation.

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2:00

Earth Notes: Rio de Flag Tour

Earth Notes ·

2024/07/31

The Rio de Flag travels from headwaters on the San Francisco Peaks north of Flagstaff all the way into a tributary of the Little Colorado River on the far east side.

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2:00

Earth Notes: Salt Mining History in the Verde Valley

Earth Notes ·

2024/07/24

Southwest of Camp Verde along Salt Mine Road are some low, bright white mounds — evidence of rock salt deposits, found in bands up to 60 feet thick in the Verde Formation.

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2:00

Earth Notes: Desert Pothole Shrimp

Earth Notes ·

2024/07/17

Aquatic animals spring to life when rainwater collects in the sandstone potholes of the Colorado Plateau’s high deserts. These temporary pools range from a few inches to 50 feet deep and may last only a short while before they evaporate.

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1:57

Earth Notes: Hawks in Vultures' Clothing

Earth Notes ·

2024/07/10

Unlike their nearest relatives, zone-tailed hawks display slightly V-shaped wing postures and rock from side to side when soaring. That’s the same way turkey vultures soar.

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1:57

Earth Notes: What Does it Take to Safely Handle a Snake?

Earth Notes ·

2024/07/03

Over half of venomous snake bites in the U.S. occur due to improper handling or attempts to kill rattlesnakes. So, learning how to safely deal with these animals is important.

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1:59

Earth Notes: Milankovitch Cycles

Earth Notes ·

2024/06/26

Over 100 years ago, a scientist theorized that three of Earth’s longer cycles could explain long-term climate changes. These are called the Milankovitch cycles.

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1:59

Earth Notes: The Green Book

Earth Notes ·

2024/06/19

Juneteenth observes the date in 1865 when enslaved African Americans were freed in Texas. But Black motorists well into the 20th century still experienced segregation and discrimination.

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1:59

Earth Notes: The National Old Trails Road in Arizona

Earth Notes ·

2024/06/12

Arizona’s share of the National Old Trails Road was the first transcontinental route for newfangled motorcars, envisioned in 1912, as a wave of automobile popularity engulfed America.

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2:00

Earth Notes: America's Oldest Towns

Earth Notes ·

2024/06/10

When you think of our Nation’s oldest settlements, stories of Plymouth Rock, Jamestown or Albany may come to mind. Yet America’s oldest towns are actually right here on the Colorado Plateau — Oraibi in Arizona and Acoma Pueblo in New Mexico.

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1:59

Earth Notes: Prescott Rose Garden

Earth Notes ·

2024/06/05

June is the month for roses and the Territorial Women’s Rose Garden in Prescott has nearly 300 varieties. Collectively, they honor the women who lived in and helped shape the Arizona territory before it became a state.

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2:00

Earth Notes: Jurassic Bonebed

Earth Notes ·

2024/05/31

The shrinking shoreline of Lake Powell has revealed a wonder: an extraordinary collection of fossil bones from the Early Jurassic period that offers a glimpse into the life of a now-extinct creature called a tritylodontid.

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2:00

Earth Notes: The Changing Narrative of the American...

Earth Notes ·

2024/05/31

Ancestors of present-day horses originated in North America and spread around the world from there. But, according to the archaeological record, they were absent from the continent since the end of the Pleistocene some 10,000 years ago until Europeans re-introduced them.

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2:00

Earth Notes: The San Juan River

Earth Notes ·

2024/05/31

The headwaters of the San Juan River originate in the snow-capped peaks of the southern Rocky Mountains. Along its journey, the river is joined by numerous tributaries as it flows through the states of Colorado, New Mexico and Utah.

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101 results

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