Environmental Tobacco Smoke: Exposure Measurements and Prevalence - Scientific report breaks down tobacco smoke constituents, their physical and chemical properties, and indoor air concentrations. Why Secondhand Smoke Cannot Be Controlled With Ventilation - Factsheet explains the pollution measurement and science of smoke concentration and buildup. Environmental Tobacco Smoke and Lung Development - Online course in scientific investigation uses actual experiment performed on effects of secondhand smoke. Chemicals in Smoke - Factsheets and papers on: how cigarettes are tested for chemical content; total yearly chemical emissions from secondhand smoke; comparison of secondhand smoke and air pollution; estimates of amounts of 30 chemicals a restaurant worker would inhale in an 8 hour shift; description of tobacco smoke components; threshold limit values for chemicals found in tobacco smoke. Exposure to Secondhand Smoke Widespread - CDC research finds that nearly 9 out of 10 Americans are exposed to secondhand smoke. Environmental Tobacco Smoke and Carcinogen-Hemoglobin Adduct Levels - Scientific paper on measurement of exposure to secondhand smoke. Exposure of the US Population to Secondhand Smoke - Research estimates the extent of exposure of the US population to secondhand smoke, and how that breaks down into home and workplace exposures. Biomarkers of Environmental Tobacco Smoke in Preschool Children and their mothers. - Scientific paper on measurement of children's exposure to secondhand smoke. Designated "No Smoking" Areas Provide Little Protection from Secondhand Smoke - Research measures secondhand smoke in "no smoking" areas, and finds that little protection is provided compared to the exposures in the smoking area. A Molecular Dosimetry Approach to Assess Human Exposure to Environmental Tobacco Smoke - Recent research measures effects of exposure to secondhand smoke from single pub visit.