Delhi air pollution spurs call for schools closure

STORY: Students arrived at school in the early hours of the morning to attend classes as heavy blankets of smog covered the city, forcing people to turn on the headlights of their vehicles while travelling.

The world's most polluted capital is blanketed in smog every winter as cold, heavy air traps construction dust, vehicle emissions and smoke from the burning of crop stubble in the neighbouring states to clear the fields for the next crop.