professor at the University of Southern California. Dr. Donnellan integrates satellite technology with high-performance computer models to study earthquakes, plate tectonics, and the corresponding movements of Earth’s crust. She is NASA’s Applied Sciences Program area lead for natural disasters and principal investigator of NASA’s QuakeSim and other projects. Dr. Donnellan has also been the project scientist of a mission to study natural hazards, ice sheets, and ecosystems and deputy manager of the JPL Science Division. She has conducted field studies in California in the region of the Northridge earthquake, in the Ventura basin, and on the San Andreas fault. She has also carried out field work on the West Antarctic Ice Streams, in the Dry Valleys, and in Marie Byrd Land of Antarctica; on the Altiplano of Bolivia, in Mongolia; and on Variegated Glacier in Alaska. Dr. Donnellan received the Presidential Early Career Award for Scientists and Engineers in 1996, the Women in Aerospace Award for Outstanding Achievement in 2003, the Women At Work Medal of Excellence in 2004 and was the MUSES of the California Science Center Foundation Woman of the Year in 2006. She has held a National Research Council Postdoctoral Fellowship at NASA Goddard Space Flight Center and has been a visiting associate at the Seismological Laboratory at the California Institute of Technology. Dr. Donnellan has a B.S. in geology from the Ohio State University, an M.S. in computer science from the University of Southern California, and M.S. and Ph.D. in geophysics from the California Institute of Technology.

MICHAEL EMCH is associate professor of geography, a Fellow at the Carolina Population Center, and an adjunct associate professor of epidemiology at the University of North Carolina at Chapel Hill. His expertise is in infectious disease ecology, neighborhood determinants of health, and geographic information science applications in public health. He leads the Spatial Health Research Group, which conducts research that explores spatio-temporal patterns of disease, primarily infectious diseases of the developing world ( Disease patterns are studied with a holistic approach by investigating the role of natural, social, and built environments in disease occurrence in different places and populations. Diverse statistical and spatial analytical methods are informed by theory from the fields of medical geography, epidemiology, and ecology. Those theories and methods are used to examine diverse topics, such as the role of population–environment drivers in viral evolution, how social connectivity and spatial connectivity simultaneously contribute to disease incidence, and the use of environmental indicators to predict disease outbreaks. Dr. Emch holds a Ph.D. in medical geography from Michigan State University, M.A. in geography from Miami University, and B.A. in biology from Alfred University.

IAN JACKSON is the chief of operations at the British Geological Survey (BGS). In 2000–2007, Mr. Jackson was the director of information at BGS. He is a member of a European Commission (EC) team drafting regulations for the

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