Tales of a Shaman's Apprentice

For thousands of years, healers have used plants to cure illness. Aspirin, the world''s most widely used drug, is based on compounds originally extracted from the bark of a willow tree, and more than a quarter of medicines found on pharmacy shelves contain plant compounds. Now Western medicine, faced with health crises such as AIDS, Alzheimer''s disease, and cancer, has begun to look to the healin...