environment

Casper Star Tribune

A Navajo tribal company has reached an agreement that would allow the U.S. government to enforce environmental laws at its coal properties in Tennessee.

Alex Brandon/AP/file

Tribal and environmental groups are calling on Arizona Republican Senator Martha McSally to back a bill permanently banning uranium mining near Grand Canyon National Park. KNAU’s Ryan Heinsius reports.

Ryan Heinsius / KNAU

The Mohave County Board of Supervisors has unanimously voted in support of expanded mining on lands adjacent to the Grand Canyon. They say a federal ban on new uranium claims has hurt the area’s economic prospects. KNAU’s Ryan Heinsius reports.


Josh Langdon/Kachina Peaks Avalanche Center

When a warm storm front moves over a snow-capped mountain range, floods often follow. These events aren’t common on the Colorado Plateau, where winter precipitation usually falls as snow. But scientists say that’s going to change as the world continues to heat up. 


Melissa Sevigny

A new paper published today in Science shows a rising risk of water shortages in the Colorado River Basin. Scientists say diminishing snowpack from climate change plays a critical role—not just because snow supplies the river with water, but because it acts as a protective shield against evaporation. KNAU’s Melissa Sevigny spoke with lead author Chris Milly of the U.S. Geological Survey.

Melissa Sevigny: Your study was about what’s going to happen to the Colorado River as the world continues to get warmer. What did you find out?

The National Geographic Society

Anyone attempting to map the Grand Canyon faces a big job. It is immense in size, intricate in topography, and not easy to get around in.


Wikicommons

A new study released this month models what happen to the health of the planet when giant plants and animal vanish. It’s happened before—at the end of the last Ice Age when mammoths and enormous sloths died out. Humans likely played a part in that extinction and the researchers say Earth’s big animals today are headed for the same fate because of overhunting, habitat loss, climate change and other factors. KNAU’s Melissa Sevigny spoke with Northern Arizona University’s Andrew Abraham who was one of the authors of the study.


NPS

Construction crews have started blasting hills at Organ Pipe Cactus National Monument in Arizona to clear space for a new border wall system.

Wikimedia Commons

The Interior Department has suspended oil and gas leases on 4,200 acres in eastern Arizona following a lawsuit brought by conservation groups. KNAU’s Ryan Heinsius reports, they allege officials violated federal law by not conducting proper environmental review.


Earth Notes: Owlflies

Feb 5, 2020
Wikimedia Commons/Charlie Jackson

Owlflies first appeared in the fossil record during the late Jurassic period, about 150 million years ago. They look like a cross between a butterfly and a dragonfly and are often mistaken for the latter.


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