Dave convenes a panel of experts on something that is the most important topic of the 21st century: climate change.

Dave talks to Curis Knight from CalTrout about that organization's 50 years of work restoring trout habitat and using science-based policy to ensure that our fisheries remain viable. Then he visits Chrysten Rivard, the director of Trout Unlimited in Oregon, to talk about how drought and wildfire are affecting trout in that part of the west.

Host Dave talks to two of his favorite YouTube content providers, Alice Ford and Jessica Mills. Alice is a stuntwoman based in Los Angeles who enjoys traveling, especially hiking and backpacking. Jessica, also known by her trail name, "Dixie," is one of the country's most accomplished through-hikers, having conquered the Appalachian, Pacific Crest, and Continental Divide Trails respectively as well as many other through hikes.

Our Apollo@50 series continues with the first truly scientific exploration of the Moon -- the Apollo 15 mission. With new hardware including an orbiting observatory platform on the Command Service Module, the first lunar rover, and an upgraded, lunar module, Astronauts Dave Scott and Jim Irwin were able to geologically explore the mountains of the Moon at the Hadley-Apennine landing site that featured 14,000 high peaks and a spectacular canyon: Hadley Rille.

Blue Dot talks to legendary deep ocean explorer Dr. Robert Ballard about his new book, Into The Deep: a Memoir by The Man Who Found Titanic.

Blue Dot talks to legendary deep ocean explorer Dr. Robert Ballard about his new book, Into The Deep: a Memoir by The Man Who Found Titanic.

Host Dave Schlom chats with retired University of Iowa Physicist Donald Gurnett about his amazing career as a pioneer of the field of space plasma physics. Gurnett was only 17 when legendary space scientist James Van Allen took him under his wing at the university and Gurnett never left spending 60 years as a Hawkeye student, teacher, and researcher.

Host Dave Schlom convenes a panel of experts on something that is the most important topic of the 21st century: climate change.

Blue Dot visits some scary places and potentially dangerous future events. Dave talks to astrobiologist David Grinspoon about two newly funded NASA robotic missions to Venus.

Blue Dot revisits with Lee Vining High School junior Ellery McQuilkin and chats about a very real science project that has earned her spots in the California State Science and Engineering Fair as well as the Regeneron International Science and Engineering Fair as a finalist.