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From fluorescent cave walls to the frontiers of space exploration

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River to River, hosted by Ben Kieffer

What if the secret to finding life on other planets is right beneath our feet?

On this episode, we hear how a team of researchers at the University of Northern Iowa is exploring the deepest caves in the U.S. with NASA funding. This could inform the search for life on other planets.

Host Ben Kieffer talks with UNI associate professor Josh Sebree about the research he’s been leading with an interdisciplinary team of UNI students, supported by NASA and the Iowa Space Grant Consortium. We also hear from one of those researchers, Jacqueline Heggen, who will be pursuing cave science in a PhD program this fall, and Cheryl Johnson, president of the Iowa Grotto, the state’s chapter of the National Speleological Society.

The grotto is dedicated to the exploration and preservation of Iowa’s caves, and Johnson has been involved in UNI's research around the country, along with other organizations such as the Cave Research Foundation.

Guests:

  • Josh Sebree, associate professor of astrochemistry and astrobiology, University of Northern Iowa
  • Jacqueline Heggen, researcher and University of Northern Iowa alumni
  • Cheryl Johnson, president, Iowa Grotto
Ben Kieffer is the host of IPR's <i>River to River</i>.
Samantha McIntosh is a talk show producer for Iowa Public Radio. She holds a bachelor's degree from St. Cloud State University. Since 2022, McIntosh has worked with IPR's talk team to bring news and features to IPR's listening audience.
Neve Kelley is a 2025 summer intern with IPR's talk show team and a senior at Oberlin College studying English, environmental studies and education. She is originally from Peoria, Illinois. Some of her favorite things to do in Iowa include going to shows at Codfish Hollow and the Englert, visiting different coffee shops and taking yoga classes.