Guest David Rosner, PhD, MPH, Ronald H. Lauterstein Professor of Sociomedical Sciences and Co-Director of the Center for the History & Ethics of Public Health at Columbia University’s Mailman School of Public Health, member of the National Academy of Sciences’ National Academy of Medicine, and author of many books on occupational disease, epidemics and public health, including Deceit and Denial – The Deadly Politics of Industrial Pollution and Lead Wars