From the archive record
Wintery view of Delhi due to winter air pollution from crop burning and vehicular exhaust pollution. People of Delhi are covering their nose to protect themselves from harmful air. Heavy traffic and crop burning results in unusual levels of smog during the months of October and November in Delhi. Every year in Punjab, about 7 to 8 million metric tonnes of paddy residue is burnt openly. Toxic chemicals, which result in respiratory problems, are released in the atmosphere. Farmers burn the paddy stubble as it involves no cost. Burning fields also affects the quality of the soil, robbing it of vital nutrients. The national capital is the most affected by bad air quality as it lies close to Punjab and Haryana where paddy burning is a common phenomenon. Source : http://www.financialexpress.com/