In part 5 of Esalen's Psychedelic Integration series, mycologist Paul Stamets, UC Berkeley professor of neurobiology David Presti, and psychiatrist Ben Sessa explore the contemporary landscape of psilocybin mushrooms, touching upon how mushrooms can help treat depression and other chronic illnesses, the concepts of synchronicity and hyper-focus, how the intravenous administration of psilocybin functions in a clinical setting, and the interconnected nature of the mind and body. Paul Stamets then proposes a mycologically-based solution to help combat bee colony collapse disorder.