Toxic smog covers Delhi after Diwali

Fireworks associated with the Hindu festival add to pollution in Indian capital as particulates in the air soar above safe levelsDelhi has been blanketed in a toxic fog the morning after the Hindu festival of Diwali, when hundreds of thousands of people in the Indian capital celebrate by setting off crackers and fireworks.Air quality in the Indian capital, one of the world’s most polluted cities, is usually very poor due to road dust, open fires, vehicle exhaust fumes, industrial emissions