Cyclone Sitrang impact brings down Kolkata’s pollution level on Kali Puja night to record low

Beyond the imagination of many environment activists and green technologists, the pollution level on the Kali Puja night of Monday and the morning after in Kolkata, which has been reported as the world's second most polluted in to a recent report of HEI SoGA, came down to a record low in the last 40 years.