Jeff Greenwald is a bestselling travel and science writer with five books and hundreds of magazine, radio, and Internet features to his credit. Jeff is the executive director of Ethical Traveler, a non-profit website and resource for the purpose of empowering travelers to change the world.Jeff was filmed by Barry Heidt of sustainabletv at the 2010  Ecotourism and Sustainable Tourism Conference organized by TIES, The International Ecotourism Society. Editing by Tom Hopkins of Sustainable Today.