What is a lichen? Find out what lichens are and why two scientists from BYU have devoted their entire careers to studying these fascinating biological systems. Dr. Larry St. Clair and Dr. Steve Leavitt share why they love lichens, some fun stories about working in the field, as well as how lichens serve as bio-monitoring systems for air quality. You can also check out the following links to learn more.BYU Lichen TourCommon Rocky Mountain LichensFollow the BYU Lichen Lab on Instagram @lichens_irl