In simple language, any unwanted or undesirable change in the components of the air is called air pollution. There are many causes of air pollution like the burning of fossil fuels releases greenhouse gases like methane, the smoke from industries and factories emits greenhouse gases such as carbon dioxide, carbon monoxide, sulphur dioxide etc. The effects of air pollution are also very adverse. It causes airborne diseases like bronchitis, pharyngitis, COPD(Chronic Obstructive Pulmonary Disorder) etc. It also causes global warming and smog. It also causes ozone layer depletion. To control air pollution, we must raise public awareness among people. We must ban old vehicles emitting too much smoke. Most importantly, we must establish industries and factories far from residential areas.