A group of Bangladeshi young people plays football where is under construction house built that place situated in Keranigonj outskirts of Dhaka, Bangladesh.  According to the World Bank Dhaka, the capital of Bangladesh, is the fastest growing city in the world with a population of 15 million. But as more of the worlds impoverished flee to mega cities for economic opportunities, the perils of urbanization are being exposed. © Monirul Alam