Guess which of the country\'s three sub-metropolitan cities, Birgunj, Biratnagar and Pokhara, is the most polluted? The answer is Birgunj, says a study conducted by the group Leaders Nepal.

The research findings, based on the air quality in June, concluded that Alakhia Road Cnowk, a commercial and residential hub in Birgunj, reported the highest values for total suspended particles (TSP). While even the industrial area of Pokhara had a lower TSP count. Likewise, the count of paniculate matter less than 10 microns (PM10) was highest at Birgunj\'s Gadheria Chowk and the Birgunj bus park reported the highest values for sulphur dioxide.