Smog- A Major Concern The beginning of the new year was marked by a thick layer of various pollutants or substances, also called smog, hovering around the capital. This created a huge problem for the passengers by disrupting the transportation system of a city, where around 2 million people travel in a single day. Approximately 50 trains were delayed and a certain number of flights canceled. The delay added to the passenger's woes as some had to wait for even 2 days at the railway station in such freezing weather conditions. Vehicular traffic was also hard hit because of visibility issues. A major hub of the country was brought to a halt. But is it a major concern? As a matter of fact, it indeed is. The word smog is a combination of two words- smoke and fog. When the hazardous particles in the air amalgamate with fog, they lead to the formation of a layer, which is thick enough to persist in the environment for a long period of time, creating choking conditions for the people.