Dr. Garrity is a systems agronomist and research leader whose career has been focused on the development of small-scale farming systems in the tropics. He is currently Drylands Ambassador for the UN Convention to Combat Desertification and Distinguished Senior Research Fellow at the World Agroforestry Centre (ICRAF), Nairobi. He served as Director General of the Centre from 2001 to 2011. He is currently leading an effort on the perennialization of agriculture in the 21st Century, building more productive and environmentally sound farming systems through a global Partnership to Create an EverGreen Agriculture. He also chairs the Steering Committee for Landcare International, a worldwide effort to support grassroots community-based natural resource management.