The smog primer

The Smog Primer has been developed to build public understanding of the sources of smog pollutants, their effects on human health, and the ment to ban DDT for almost all uses, and campaigning for the clean-up of the Don River in Toronto. [...] The size of the particle is of great impor- and biomass, dust from above the Earth’s surface when a variety of source of air pollution affecting human health tance, determining how far into the lung it can go mechanical processes, such sources release smog forming pollutants into the and the environment, however, is human activity, when inhaled. [...] The health effects of air the particulate, the deeper it goes into the lungs the cardio–respiratory (heart–lung) system. [...] Indirectly, NOx are involved in the combined with water, SO2 converts to sulphuric ing from a few airways at the top of the lungs to formation of O3 (by combining with VOCs and acid, which is highly irritating to the sensitive Upper Respiratory Tract (nose, pharynx, larynx and millions of smaller ones deep in the lungs. [...] O3 and PM The health effects associated with them vary SO is also one of the main contributors to the protective mucus lining of the nose thereby that are inhaled into the lungs can irritate the 2 according to the specific compound.