Classic Smog In its most primitive and basic form, smog air pollution is the result of the burning of fossil fuels. It has several major components:
1) Smoke, which is tiny particles of ash, is released from the smokestacks of coal fired power stations. Coal power plants are now on the whole designed to trap this ash, called fly ash, which can be used to great effect in the concrete industry. These tiny particles contain not only carbon residue, but also silicon dioxide, calcium oxide and traces of heavy metals. If inhaled these can pose significant health risks. The silicon dioxide in the fly ash alone can cause lesions, scarring and inflammation of the lungs.
2) Sulfur Dioxide. Sulfur