As many as 65% of traffic policemen manning roads in the Bangladeshi capital Dhaka are facing hearing and sleeping problems due to high noise levels in the city, according to a study done by Bangabandhu Sheikh Mujib Medical University. Last month, a UN Environment Program (UNEP) report declared Dhaka the world’s noisiest city. Against the permissible limits of 55 decibels as set by the World Health Organization (WHO), the noise ...