Host Dave Schlom is joined by California Institute of Technology professor Sarah Reisman for an in-depth conversation about teaching one of the most difficult subjects taught on any college campus: organic chemistry.

Host Dave Schlom is joined by nature and wildlife photographer Tom Murphy for an in-depth conversation about his life and career.

Gordon Telepun joins host Dave Schlom to discuss the Titan submersible implosion that killed five people, including Ocean Gate CEO and pilot Stockton Rush, in 2023.

Host Dave Schlom is joined once again by Joe Gaydos and Bob Friel from the SeaDoc Society based on Orcas Island in the Pacific Northwest.

Host Dave Schlom is joined by two scientists from the SETI Institute in Mt. View, California, to talk about one of hisfavorite celestial phenomena -- comets.

Host Dave Schlom is joined by two program managers from California State University's Big Chico Creek Ecological Reserve to discuss the concept of "good fire."

Blue Dot takes a deep look at issues surrounding one of the world's most diverse waterways, the California Delta.

Geology Professor Emeritus Lori Dengler joins host Dave Schlom from Cal Poly Humboldt for an in-depth look at the tectonic forces that have shaped California's North Coast.

Host Dave Schlom is joined by veteran space journalist Jeffrey Kluger to talk about his new book, Gemini: Stepping Stone to the Moon, The Untold Story.

Host Dave Schlom is joined by Fiona Robertson, author of the new book, Stone Lands: A Journey of Darkness and Light through Britain's Ancient Places (