John Gribbin discusses various science topics before Linda Moulton Howe and Lucy Pringle examine crop circle phenomena. Gribbin explores frontiers of physics, cosmology, and scientific discovery across multiple disciplines. The conversation addresses current research into quantum mechanics, parallel universes, and the nature of reality. Howe and Pringle analyze the 2001 crop circle season and the increasingly complex formations appearing in fields worldwide. The discussion examines the geometric sophistication of crop circles and mathematical principles encoded in their designs. Pringle discusses the physical effects people report experiencing inside crop formations including healing and consciousness alterations. Howe presents evidence distinguishing genuine crop circles from human-made hoaxes. The broadcast explores theories about crop circle creation from earth energies to extraterrestrial communication. Pringle discusses her photographic documentation of crop circles and the patterns she has observed over decades of research. The conversation examines what messages the genuine formations might convey and who or what creates them.