Anthony (Tony) Clevenger, Ph.D., Wildlife Ecology, is a Senior Wildlife Research Scientist specializing in identifying factors influencing wildlife crossing performance and analyzing factors contributing to wildlife-vehicle collisions. He is a member of the U.S. National Academy of Sciences Committee on Effects of Highways on Natural Communities and Ecosystems. He has published over 40 articles in peer-reviewed scientific journals and co-authored three books including, Road Ecology: Science and Solutions (Island Press, 2003).