A well-traveled and experienced ethnobotanist, Marc Williams, MA, has taught hundreds of people about the marvelous world of plants, people and their interface, while working with over 50 organizations and online at Botany Everyday. Marc is the Executive Director of Plants and Healers International (PHI). He is dedicated to improving our current global ecological crisis. His training includes a B.A. in Environmental Studies/Sustainable Agriculture and an M.A. in Appalachian Studies/Sustainable Development.