This document discusses air pollution, defining it as harmful amounts of gases, dust, fumes or odors in the air that can negatively impact human health, animals, or damage plants and materials. It identifies primary pollutants like carbon monoxide and sulfur dioxide that directly pollute the air from sources like vehicle exhaust and coal combustion. The document also outlines different types of air pollution including industrial, transportation, and smog pollution. Effects of air pollution mentioned are acid rain, while control methods proposed include using catalytic converters and scrubbers to reduce harmful emissions.