http://www.technologyreview.com/Energy/21029/ Dr. Stephen R. Humphrey, Director of Academic Programs, School of Natural Resources and Environment, Box 116455, 103 Black Hall, University of Florida Gainesville, FL 32611-6455 USA Tel. 352-392-9230, Fax 352-392-9748 http://snre.ufl.edu<http://snre.ufl.edu/>