"I found Mark Plotkin's book to be an exciting and inspiring mix of ethnobotany and adventure, userful to anyone interested in shamanism and rain forest conservation."
-- Terence McKenna, author of Food of the Gods

"Mark Plotkin ushers us through an Emerald Door into the world of Amazonian shamans. An intensely personal and fascinating account of one of the greatest dramas of science, environment, and humanity, it is as gripping as Jurassic Park but real."
-- Thomas E. Lovejoy, Smithsonian Institution

"An enthralling account by a talented writer and discerning scientist . . . his book is destined to become a classic and, as such, deserves to be read by everyone interested in botany, anthropology, tropical medicine, shamanism, and environmental conservation."
-- Richard Evans Schultes, director emeritus, Botanical Museum of Harvard University