This is a collection of twenty speeches presented at the American Medical Association's Air Pollution Medical Conference, October 5-7, 1970. Speeches included: Air Pollution Control: The Physician's Role; Air Pollution Problems in Nuclear Power Development; Airway Resistance and Collateral Ventilation; Asbestos Air Pollution in Urban Areas; Byssinosis: Airway Responses Caused by Inhalation of Textile Dusts; Chronic Effects of the Inhalation of Insoluble Uranium Compounds in Animals; Chronic Nonspecific Respiratory Disease; Effects of Cigarette Smoking on the Metabolism of Carcinogens by Human Placenta and Rat Lung; Experimental Studies on Sulphur Dioxide Toxicity; Experimental Studies Relating to the Pathogenesis of Emphysema; Influence of Nitrogen Dioxide on Some Physiologic Activities of Alveolar Macrophages; Relationship of SO2 Levels to Morbidity and Mortality in "High Risk" Populations; Respiratory Hazards of Enzyme Detergent Manufacture; Response of Cats to Inhaled Mixtures of SO2 and SO2 - NaCl Aerosol in Air; Rubber Plant Studies; Silicosis; The Effect of Carbon Monoxide on Experimentally Induced Atherosclerosis in the Squirrel Monkey; The Environment as a Social Cause: 1845 and 1970; and The Study of Bronchial Caliber in Exercised Dog Lobes. (BL)