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. UNI associate professor Josh Sebree discusses the research he’s been leading with an interdisciplinary team of UNI students. We also hear from one of those researchers, Jacqueline Heggen, and Cheryl Johnson, president of the state’s chapter of the National Speleological Society.