Earth Notes
5:00 am
Wed August 6, 2014

Earth Notes: Frogs on the Move

The northern leopard frog

On the Colorado Plateau, life begins anew when the monsoon rains come — especially for native amphibians like the northern leopard frog. This beautiful, spotted, greenish-brown frog pays close attention to moisture, and starts to move on humid days and rainy nights.

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Earth Notes
3:39 pm
Wed June 11, 2014

Earth Notes: Shelter Dogs and Salamanders

Rescue dogs search for salamanders in the Jémez Mountains of New Mexico.

An unusual team of four-legged researchers is hard at work in the Jémez Mountains of New Mexico. They love to run, chase balls — and sniff out a rare salamander found nowhere else.

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Earth Notes
8:51 am
Wed June 4, 2014

Earth Notes: Sedona Wetlands Preserve

Made up of reclaimed wastewater, the Sedona Wetlands provides a habitat for wild birds.
Credit Courtesy photo

What happens to the water that runs down your kitchen or shower drain? If you live in Sedona, Ariz., the answer is that it helps migratory birds along their way.

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Earth Notes
2:27 pm
Wed February 26, 2014

Earth Notes: The Line on Fishing Line

Untangling birds from discarded fishing line
Credit Arizona Game and Fish Department

Arizona claims a unique population of desert-nesting bald eagles. Those eagles often build their big bulky nests near water, including lakes and rivers in the northern part of the state. The birds use about anything they can find in nest construction—including used fishing line.

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KNAU and Arizona News
5:00 am
Wed February 26, 2014

Invasive Mussel Population Expected to Rise at Lake Powell

Quagga mussels attached to the bottom of a boat.
Credit usbr.gov

Invasive aquatic species have entered many of the major water systems in the American West. As Arizona Public Radio’s Justin Regan reports, the population of the quagga mussel is expected to rise at Lake Powell.

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Earth Notes
8:41 am
Wed February 19, 2014

Earth Notes: Project FeederWatch

Credit Pam Koch/Project FeederWatch

Feeding wild birds in the backyard is an enjoyable hobby for many. But for Emma Greig it’s much more—it’s a way to keep tabs on what’s happening with bird populations across the country.

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KNAU and Arizona News
4:20 pm
Wed January 29, 2014

Off-Road Access to be Expanded in Glen Canyon

Glen Canyon
Credit utah.sierraclub.org

The National Park Service has proposed adding more than a dozen areas for off-highway vehicle use within the Glen Canyon National Recreation Area. As Arizona Public Radio’s Ryan Heinsius reports, the plan is designed to halt illegal off roading. However, conservation groups aren’t happy.

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9:11 am
Wed January 9, 2013

2012 The Warmest Year On Record

Last year was the hottest year on record for the contiguous United States. And the Upper Colorado River Basin had its driest year on record, according to the latest National Oceanic and Atmospheric Administration climate report released Tuesday.

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KNAU and Arizona News
1:42 pm
Fri December 14, 2012

Park Service Bans Older Watercraft on Lakes Mead and Mohave

Lake Mead Marina
Credit National Park Service

If you’ve got an older model watercraft, with a carbureted, two stroke engine, don’t bother taking it to either Lake Mead or Lake Mohave after the 1st of the year.

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KNAU and Arizona News
11:43 am
Tue November 13, 2012

4FRI Part 1: The Problem with Our Ponderosa Forests

Kelly Canyon
Michael Collier


The world’s largest ponderosa pine forest stretches across higher elevations from the San Francisco Peaks to the Arizona/New Mexico border. But in the last century, human intervention has threatened its health.

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