Science and Innovation

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. 


Activists Envision a Border Wall Made of Solar Panels

Jun 9, 2017
Paul Mirocha

President Trump has requested prototypes for what he calls a “physically imposing” and “beautiful” border wall. This week in a meeting with congressional leaders he floated the idea of covering it in solar panels. That’s not a new concept. Quite a few people have been working on solar wall designs. Arizona author and ecologist Gary Paul Nabhan says a solar installation would create clean energy and sustainable jobs for the U.S. and Mexico. KNAU’s Melissa Sevigny spoke with him about his vision.


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.


Steve Hillebrand, U.S. Fish and Wildlife Service

Arizona and Sonora, Mexico are one ecosystem—a diverse and rugged desert—but they’re split by hundreds of miles of fences and vehicle barriers. Scientists want to know how the current U.S.-Mexico border wall affects wildlife, and what will happen if that barrier is made more impenetrable. As KNAU’s Melissa Sevigny reports, doing research in this region is fraught with complications.

Bob Wick, BLM

Electronic billboards are restricted in most of Arizona to protect dark skies for astronomers. Now lawmakers have lifted the ban in a region of Mohave County. KNAU’s Melissa Sevigny reports.


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