Sheldon Krimsky is professor of urban and environmental policy and planning and adjunct professor of public health and community medicine at Tufts University. He is author or coeditor of eleven books, most recently Race and the Genetic Revolution: Science, Myth, and Culture.Tania Simoncelli worked for more than six years as the science advisor to the American Civil Liberties Union, where she guided the organization»s responses to cutting-edge developments in science and technology that pose challenges for civil liberties. She currently works for the U.S. Food and Drug Administration.