'Odd' and 'even' lungs

While the sharp rise in the pollution level in New Delhi left citizens gasping for breath, it also brought out the humorous side of many. “Please use right lung on odd days and left lung on even days: notice issued in public interest by Delhi government,” tweeted Harsh Goenka, chairman of RPG Enterprises, alluding to the odd-even formula for plying private cars introduced in two phases by the Delhi government earlier this year. Subsequent studies showed that the experiment had done little to reduce pollution in the city.