grand canyon

Melissa Sevigny

The Grand Canyon’s rim-to-rim trail is not an ordinary day hike: a marathon in distance, a mile change in elevation, through a desert that swings through extremes of heat and cold. Rim-to-rim hikers put their bodies through a grueling experience. That makes them the perfect candidates for a study aimed at predicting medical emergencies before they start. KNAU’s Melissa Sevigny reports. 


Susan Montoya Bryan, AP

The National Park Service has extended the length of a public comment period on a plan to reduce the number of bison found near the Grand Canyon's North Rim through lethal and nonlethal means.

Ryan Hagerty, USFWS

The National Park Service has released a plan to reduce the number of bison on the Grand Canyon’s North Rim. KNAU’s Melissa Sevigny reports, they’re trampling wetlands and archaeological sites.


Scott Thybony

Novelist Gustave Flaubert reached a frustrating impasse while writing Madame Bovary. So, he wrote to a friend about the struggle, hoping it would fix his writer's block: "What a heavy oar the pen is, and what a strong current ideas are to row in!" Commentator Scott Thybony can relate. He, too, spends a lot of time thinking about writing and rivers, the subjects of this month's Canyon Commentary


Grand Canyon National Park

Grand Canyon National Park officials are scaling back a search for two missing hikers swept down a stream below the North Rim.

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