Howard W. Mielke, Ph.D. Currently Research Professor of environmental signaling in the Department of Pharmacology, Tulane School of Medicine. Prior to graduate school, I joined the US Peace Corps and taught at Likuni Men's Secondary School, Lilongwe, Malawi. After Peace Corps, I taught at Anatolia Collegian, Thessaloniki, Greece. My graduate school was at the University of Michigan, for MS and PhD degrees. My research focuses on the elemental chemistry and health effects related to urban environments where I taught including UCLA, Univ. of MD Baltimore County, Macalester College, Xavier University of Louisiana, and Tulane. Founding member of the International Society for Children’s Health and the Environment, a full member of the Society of Toxicology, and the American Chemical Society. I have published numerous articles on urban geochemistry and children’s health. My publications inform the scientific basis for proactive lead dust prevention, including testimony at the US Senate in 1984, and providing persuasive research on invisible urban lead accumulation in support of the 1986 rapid phasedown of lead in gasoline. The research supported revised national and local policy including lead laws in New Orleans, assisting Peru with air pollution from a lead smelter, labelling cosmetic products in Canada, and assisting Norway with a national soil intervention program. Lastly, I taught classes in Xi’an, China and Moscow, Russia. I’ve enjoyed a life of empirical research.