Alex K. Gearin, Ph.D., is an medical anthropologist researching psychedelic substance using networks and practices across the globe. His forthcoming book Global Ayahuasca: Wondrous Visions and Modern Worlds (Stanford University Press, 2024) explores the psychoactive plant brew “ayahuasca” in Peru, Australia, and China. His work is featured in Current Anthropology, Social Science and Medicine, Frontiers in Pharmacology, JRAI, and other outlets, and he is co-editor of The World Ayahuasca Diaspora: Controversies and Reinventions (Routledge, 2017). Alex is assistant professor at The University of Hong Kong.