Howard Hu is adjunct professor at Harvard School of Public Health and chair of the Department of Environmental Health Sciences and professor of environmental health, epidemiology, and medicine at the University of Michigan Schools of Public Health and Medicine. Dr. Hu was the founding medical editor of Environmental Health Perspectives. He founded the Metals Epidemiology Research Group (MERG) which has been conducting multi-disciplinary human population studies around the world on the health effects of general environmental and occupational exposures to lead, manganese, mercury, arsenic, cadmium and other heavy metals. An early MERG advance was the development and application of a special instrument, called K-X-ray fluorescence (KXRF), for the safe and accurate measurement of skeletal lead levels in human subjects. Dr. Hu directs the Center for Children's Environmental Health and Disease Prevention Research at Harvard School of Public Health.