Harriet Beinfield, L.Ac, is a licensed acupuncturist, author, and educator practicing Chinese medicine for 35 years. She is the co-author of the widely read Between Heaven and Earth: A Guide to Chinese Medicine and many articles. She is on the Advisory Board of the University of California San Francisco School of Medicine's (UCSF) Osher Center for Integrative Medicine. She is also on the Editorial Board of two peer-reviewed journals, Explore: The Journal of Science and Healing and Alternative Therapies in Health and Medicine as well as the popular magazine Natural Health. She has lectured nationally and internationally. She is engaged in the active practice of acupuncture and Chinese herbal medicine at the San Francisco clinic Chinese Medicine Works.