A conversation with Julia "Butterfly" Hill, one of the most important environmental activists and eco warriors of our time. Perhaps best known for living for two years in a 1,500-year-old redwood tree to prevent it from being cut down, she has inspired millions through her many courageous acts, her books, poetry, lectures, and retreats. In this interview, we discuss how we can recognize our life's calling and make courageous choices for a better world.