producing animals through the use of immunohistochemistry and in situ hybridization. She is active in the fields of emerging diseases and international veterinary medicine and serves as coordinator of international activities for the College of Veterinary Medicine. Before joining the University of Georgia in 1996, she worked at the U.S. Department of Agriculture (USDA) Plum Island Foreign Animal Disease Center for 10 years, conducting pathogenesis studies on many foreign animal diseases. Her bench research at the University of Georgia has focused on poultry diseases, and she works closely with the USDA facility in Athens that is dedicated to foreign diseases of poultry. In educational research, she has several grants to promote national animal health infrastructure in developing nations. Dr. Brown is a Diplomate of the American College of Veterinary Pathologists. She has published or presented more than 250 scientific papers and has testified before Congress on issues involving agroterrorism. Dr. Brown has served on many industrial and federal panels and has been a technical consultant to numerous foreign governments on issues involving infectious diseases and animal health infrastructure. She received her Ph.D. in veterinary pathology with a specialization in infectious diseases from the University of California at Davis and her D.V.M. from the University of Guelph.

Mark T. Hernandez is a professor in the Department of Civil, Environmental, and Architectural Engineering at the University of Colorado at Boulder. His research interests lie at the cusp of molecular biology and civil engineering, focusing on the characterization and control of biological air pollution, both natural and anthropogenic. His recent work has focused on engineering disinfection systems for airborne bacteria and viruses and on tracking bioaerosols through natural weather patterns and catastrophic events (such as Hurricane Katrina). He is a registered professional civil engineer and an active technical consultant in the commercial waste-treatment and industrial hygiene sectors. Dr. Hernandez serves as an editor of Aerosol Science and Technology and is the director of the Colorado Diversity Initiative. He received his Ph.D. and M.S. in environmental engineering and his B.S. in civil engineering from the University of California at Berkeley.

Ahsan Kareem is the Robert M. Moran Professor of Engineering and the director of the NatHaz Modeling Laboratory at the University of Notre Dame. His research uses computer models and laboratory and full-scale experiments to study the dynamic effects of environmental loads under winds, waves, and earthquakes to understand and predict the impact of natural hazards on the constructed environment, and to develop mitigation strategies that enhance the performance and safety of structures. He is a former president of the American Association for Wind Engineering and past editor-in-chief of the international journal Wind and Structures.

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