Psychoactive herbs have been a part of human culture since it began. In the last century, we saw an explosion of interest in hallucinogenic experiences as Westerners begin to explore the herbal traditions of other cultures. That exploration has its possibilities and changes. Today, we're talking with Nick Polizzi, author of books like The Sacred Science, documentary filmmaker and explorer of ancient medicines about our culture's fascination in hallucinogenic herbal traditions.