Dhaka, the densely populated capital of Bangladesh, ranked third among the world’s most polluted cities on Monday morning, recording an Air Quality Index (AQI) of 272 at 8:58am. The city’s air was classified as "very unhealthy," indicating a serious health threat, according to the AQI report. Delhi in India, Lahore in Pakistan, and Kolkata in India occupied the first, second, and... Details