JEREMY NARBY, Ph.D., studied history at the University of Kent and earned a doctorate in anthropology from Stanford University. Since 1990, he has coordinated projects supporting Amazonian communities through the Swiss NGO Nouvelle Planète, focusing on land rights, bilingual education, and sustainable forestry. He is the author of The Cosmic Serpent: DNA and the Origins of Knowledge (1998) and Intelligence in Nature: An Inquiry into Knowledge (2005), and co-editor with Francis Huxley of Shamans Through Time: 500 Years on the Path to Knowledge (2001). His most recent work, co-authored with Rafael Chanchari Pizuri, is Plant Teachers: Tobacco and Ayahuasca (2021).