Science and Innovation

Verde River Institute

A bill signed by Governor Doug Ducey last week allows Arizona farmers, ranchers, and other water users to leave water in rivers and streams without the risk of losing their rights to it. The new law modifies a water policy called “use it or lose it” which has been a longstanding roadblock in conservation. KNAU’s Melissa Sevigny spoke about the change with Kim Mitchell of Western Resource Advocates.


NASA has made the first-ever recording of the sounds of Mars. KNAU’s Melissa Sevigny reports.

Click on the audio to hear the sounds of Mars:

Society of Breast Imaging

Health experts recommend that women who have been recently vaccinated against COVID-19 should delay mammograms for at least a month, when possible. KNAU’s Melissa Sevigny reports.

NOIRLab/ NSF/ AURA/ J. da Silva.

A team of astronomers has confirmed the discovery of the furthest-known object in the solar system, nicknamed “Farfarout.” The team found it in 2018 and has been tracking it ever since. It’s smaller than Pluto and takes a thousand years to make an orbit around the sun. KNAU’s Melissa Sevigny spoke with Chad Trujillo of Northern Arizona University about the finding, which is part of his ongoing survey of the distant reaches of the solar system. 


This Thursday a Mars rover will make its descent to the surface of the Red Planet, in an event known to NASA scientists as the “seven minutes of terror.” The Perseverance mission will land in a dry lakebed and look for signs of ancient life, and also collect rock samples which will be stored in hopes of returning them to Earth one day. Aaron Yazzie is a Navajo mechanical engineer and a member of the NASA team. KNAU’s Melissa Sevigny spoke with him about his journey from Holbrook to Mars.

Listen to an extended 14-minute version of the interview below, in which Aaron Yazzie discusses the "seven minutes of terror," sending a tiny helicopter to Mars, and the search for life on other planets.