Why We Do What We Do Everyday.

Listen to Mark Plotkin, PhD. Mark is an Ethnobotanist studying the relationship between people and plants. Here he talks as part of a TED talk about some of what has inspired us to build the T.R.E.E. center. Mark is also author of 'Tales Of A Shaman' s Apprentice ' as well as 'Medicine Quest: In Search Of Nature's Healing Secrets'.