Frederic R. Siegel is Professor Emeritus at The George Washington University. His books Applied Geochemistry (1974), Geoquimica Aplicada (1991), Natural and Anthropogenic Hazards in Development Planning (1996), Environmental Geochemistry of Potentially Toxic Metals ((2001/2002), and Demands of Expanding Populations and Development Planning (2008) reflect Dr. Siegel’s cumulative teaching and research experience in marine, exploration, and environmental geochemistry, and his work to alleviate or eliminate environmental problems related to physical, social, chemical, and economic conditions associated with planned development projects.