Richard Evans Schultes (1911-2001) was widely considered the preeminent authority on hallucinogenic and medicinal plants, and is regarded as the "father of ethnobotany." He published ten books and more than 450 scientific articles, and in 1992 he received the gold medal of the Linnean Society of London, which is often equated with the Nobel Prize for botany. Schultes's research into hallucinogenic plants made some of his books cult favorites among drug experimenters in the 1960s. His findings also influenced such cultural icons as Aldous Huxley, Timothy Leary, William Burroughs, and Carlos Castenada. Wade Davis studied for several years with Richard Evans Schultes while getting his Ph.D. in ethnobotany and is a critically acclaimed, internationally best-selling author and anthropologist, whose many books include "The Serpent and the Rainbow," "One River," "The Wayfinders," and "Into the Silence"--winner of the 2012 Samuel Johnson Prize, the top award for literary nonfiction in the English language. Between 1999 and 2013, Davis served as explorer-in-residence at the National Geographic Society and he is currently a professor of anthropology and the LEEF Chair in Cultures and Ecosystems at Risk at the University of British Columbia. Chris Murray edited Schultes's remarkable photographs and journals for publication in "The Lost Amazon, " curated other fine photography books, and founded and directs the Govinda Gallery in Washington D.C., where he lives. An exhibition based on "The Lost Amazon, " originating at the Govinda Gallery and subsequently touring, is among the more than 200 exhibitions he has organized. Andrew Weil is a world-renowned leader and pioneer in the field of integrative medicine. Dr. Weil is the founder and director of the Arizona Center for Integrative Medicine at the University of Arizona Health Sciences Center, where he is also a clinical professor of medicine, professor of public health, and the Lovell-Jones Professor of Integrative Rheumatology. Dr. Weil received both his medical degree and his undergraduate A.B. degree in biology (botany) from Harvard University. Approximately ten million copies of Dr. Weil's books have been sold worldwide. He lives in Tucson, AZ.