Dr David Luke is Senior Lecturer in Psychology at the University of Greenwich where he has been teaching an undergraduate course on the Psychology of Exceptional Human Experience since 2009. His research focuses on transpersonal experiences, anomalous phenomena and altered states of consciousness, especially via psychedelics, having published more than 100 academic papers in this area, including nine books, most recently DMT Dialogues: Encounters with the Spirit Molecule (2018), and Otherworlds: Psychedelics and Exceptional Human Experience (2017). When he is not running clinical drug trials with LSD, doing DMT field experiments or observing apparent weather control with Mexican shamans he directs the Ecology, Cosmos and Consciousness salon at the Institute of Ecotechnics, London, and is a cofounder and director of Breaking Convention: International Conference on Psychedelic Consciousness. He has given over 250 invited public lectures and conference presentations, won teaching, research and writing awards, organised numerous festivals, conferences, symposia, seminars, retreats, expeditions, pagan cabarets and pilgrimages, and has studied techniques of consciousness alteration from South America to India, from the perspective of scientists, shamans and Shivaites. He lives life on the edge, of Sussex.