Dan R. Lynch and Julie A. Kirsch are a husband and wife duo who have combined their expertise in geology and psychology respectively to dive into the myths and truths behind the therapeutic uses of rocks and minerals. Dan has written more than a dozen books on rocks, minerals, and fossils. He prides himself on "decoding" the complex concepts of the natural world. Julie completed her doctorate in psychology, researching health, aging, and well-being, including understanding how people cope with life's hardships.