16
March
সিগন্যালে যখন দাঁড়িয়ে থাকো , গাড়ি তখন বন্ধ রাখো I – Week II
Kolkata is the second most polluted city in the world, according to a recent report of HEI SoGA,second after the national capital Delhi. Environmental experts and activists are of the opinion that besides population there are other factors contribution to this high air population rate in Kolkata ,the foremost of