I have 30 years of experience, and specialize in the field of public health with specific knowledge in the areas of occupational health and safety, health policy and environmental health. I have published on such topics as industrial air pollution as a driving hazard, the health insurance industry and aspects of the American health care system. I have testified on environmental pollutants in marine mammals. My background in both sociology and public health helps me see the bigger picture, find relationships missed by others, and gives me a wide variety of venues to research any issue.