Polluted air is a major environmental health problem and its effects on people are very complex. There are many different sources of pollution and their individual effects vary. Studies across the world have shown that the pollutants cause serious health problems especially in children. From breathing problems and asthma to cancer, the ailments caused by polluted air are many. Studies carried out in Kochi have shown that one out of every four children in the city suffers from breathing problems. Doctors feel pollution is the main culprit in this issue.