Dr. Mathis Wackernagel, President of Global Footprint Network, co-created the Ecological Footprint as his PhD with his advisor Dr. Bill Rees in the early 1990s. Global Footprint Network is an international non-profit organization focusing on bringing about a sustainable human economy in which all can thrive within the means of one planet. Mathis’ awards include the Blue Planet Prize, the Zayed International Prize for the Environment, and the Skoll Award for Social Entrepreneurship.