Science and Innovation

University of Arizona Health Sciences

Mexican-American children north of the U.S.-Mexico border generally live in cleaner, healthier homes than those to the south. And yet, they have much higher rates of asthma. Scientists at the University of Arizona Health Sciences think exposure to some kinds of bacteria may be a good thing when it comes to asthma. They’re recruiting mothers and babies in Tucson and Nogales to test that idea, called “the hygiene hypothesis.” KNAU’s Melissa Sevigny spoke with Dr. Fernando Martinez about the study.


National Park Service

Here’s a fish story for you: what if you could get paid to go fishing all day? The National Park Service wants anglers to help get rid of exotic brown trout at Lees Ferry on the Colorado River. The agency is giving cash prizes for every fish to try to knock down their numbers. KNAU’s Melissa Sevigny reports, the program is an unusual experiment, designed to meet the goals of the Park Service but also respect the spiritual beliefs of the Zuni Tribe.

National Park Service, Lake Mead National Recreation Area

Newly released numbers from the U.S. Bureau of Reclamation project a high chance of shortages on the Colorado River within the next two years. KNAU’s Melissa Sevigny reports.


Centers for Disease Control and Prevention

A massive vaccination effort against the coronavirus disease is underway worldwide. In Arizona, more than 2 million people have received at least one dose. It’s a race against emerging disease variants which in some cases reduce the effectiveness of vaccines or make the disease more deadly. KNAU’s Melissa Sevigny spoke about the latest science with Dr. Paul Keim of Northern Arizona University.


Northern Counties Health Care

The coronavirus pandemic has struck nursing homes particularly hard, and a new study from Northern Arizona University shows how race plays a role in mortality rates. KNAU’s Melissa Sevigny reports.


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