New Delhi, Dec. 23 -- The Internet is truly a wonderful thing, and every day becomes a new testament to the kindness of humankind. In one such incident, a social media user became a saviour for a 19-year-old stranger, whose need for asthma medication had doubled due to the deteriorating air quality in Delhi, and was struggling financially to afford it.

On Tuesday morning, Delhi woke up to choking air again, as thick fog and haze engulfed the city skyline. The air quality index (AQI) levels in the capital city crossed 400, in the severe category, at 27 monitoring stations, and several others slipped into the 'severe plus' range.

At 9 am on Tuesday, the city recorded an AQI of 415, slipping from the 'very poor' category a day earlier, as ...