University of Arizona

Chris Richards/University of Arizona

A new smartphone app can anonymously alert people if they’ve been in close proximity to someone who tested positive for COVID-19.  “COVIDWatch” uses Bluetooth to connect with nearby phones that also have the app installed, and alerts users when they’ve been close to an infected person for a significant amount of time. It’s being tested for the first time at the University of Arizona, and Northern Arizona University is considering adopting it. KNAU’s Melissa Sevigny spoke with Joanna Masel, a professor of ecology and evolutionary biology at the U of A who designed the app’s risk assessment technology.

AP Photo/John Miller, File

Lute Olson, the Hall of Fame coach who turned Arizona into a college basketball powerhouse, has died. He was 85.

Northern Arizona University has confirmed that some student athletes have tested positive for coronavirus.

University of Arizona

The University of Arizona has laid off more than 250 employees as enrollment is expected to drop in the fall.

Centers for Disease Control and Prevention

Arizona is one of two dozen U.S. states where coronavirus cases have been on the rise for the past week. Governor Doug Ducey points to increased testing as the cause, but local health experts say hospitalizations are increasing, too. In KNAU’s weekly update on the science of COVID-19, Melissa Sevigny speaks with University of Arizona epidemiologist Dr. Purnima Madhivanan about what’s driving those numbers, who it’s affecting, and why.