grand canyon

Emery Kolb, USGS Photographic Library

In 1923, the U.S. Geological Survey sponsored its first expedition on the Colorado River in Grand Canyon. The crew of 12 men was led by topographic engineer Claude Birdseye. Eugene LaRue was hydraulic engineer and chief photographer, and Emery Kolb was head boatman. 


worldatlas.com

Conservationists have asked state officials to deny air-pollution permits for three uranium mines near the Grand Canyon. Arizona Public Radio’s Ryan Heinsius reports, the groups say the mines threaten public health and the environment. 


Mark Henle/The Arizona Republic

The Arizona Department of Environmental Quality has released draft air-pollution-permit renewals for three uranium mines near the Grand Canyon. The agency halted the renewals last year after heightened uranium levels were found in soil. Arizona Public Radio’s Ryan Heinsius reports.


Mutts and Minerals/Catherine Carter

There are countless places to go for a great view of the Grand Canyon. Akin's Perch is one of them. That's where the artist Louis Akin - in the early 1900's - painted one of his large-scale works of a storm swallowing up the Canyon. In this month's Canyon Commentary, Scott Thybony visits Akin's Perch to see the monsoon through a painter's eye.


grandcanyon.net

The Havasupai Tribe this week closed all access by commercial hiking guides to the Havasupai Campground. The closure follows animal abuse charges recently brought against a member of the tribe whose horses packed gear for the companies’ clients. Arizona Public Radio’s Ryan Heinsius reports.


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