Join us in our discussion, Environmental Health Hazards, with world-renowned epidemiologist Devra Lee Davis, M.P.H., Ph.D. In her new book "When Smoke Ran Like Water: Tales of Environmental Deception and the Battle Against Pollution," Davis makes a compelling case for changing our approaches to public health.

Davis documents how environmental toxins contribute to a broad spectrum of human diseases and how industrial and governmental interests have hidden from the public the very high costs of "progress." Among the topics addressed in her book are how breast and other cancers are linked with exposures to avoidable environmental contaminants; how environmental toxins play a role in the growing health problems men face, including increased cases of sterility and testicular cancer; and how the health risks children suffer from exposure to the environment, such as birth defects and asthma, have remained in dispute and unresolved far longer than necessary. She also reports on promising new technologies and business activities that are promoting cleaner, greener, and more efficient ways of developing economies in the United States and abroad.