Dr. Ronald Glasser talks about his book "The Greatest Battle," which explores cancer and the environmental factors that can cause it. He talks about smoking, food additives and diet, infectious diseases, and germs.

Discussing health hazards in work environments and environmental pollution. Interviewing Dr. Bertram Carnow and Bob and Joan Ericksen.

Interviewing Dr. Bertram Carnow about environmental health, air pollution, and occupational diseases.

Both Bob and Joan Ericksen ask why is a school being built not only by two highways but right next door to a paint factory. They contend that the paint fumes can't be good for anyone to breath. Instead of asking their patients where they work, Dr. Carnow believes more doctors need to ask, "What do you do?", to determine if they're working with any hazardous materials that may harm their health.