William Laurance is a senior scientist at the Smithsonian Tropical Research Institute in Panama, and the Biological Dynamics of Forest Fragments Project in Brazilian Amazonia. His research is focused on assessing the impacts of intensive land-uses, such as habitat fragmentation, logging, and wildfires on tropical ecosystems. He is also broadly interested in global-change phenomena, and in conservation policy. A leading voice for tropical forest conservation, Dr. Laurance firmly believes that scientists must engage policy makers and the general public, in addition to other scientists. He has received a number of professional awards and is a fellow of the American Association of the Advancement of Science and World Innovation Foundation. He is currently president of the Association for Tropical Biology and Conservation, the world's largest scientific organization devoted to the study and wise use of tropical ecosystems.