Bangladesh has been ranked fourth among 91 countries with worst urban air quality in the latest air pollution monitoring report of World Health Organisation (WHO).
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/bangladesh-4th-most-polluted-world
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/daily-star-bangladesh
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/bangladesh
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/who
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/pm-25
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/rspm-pm-10
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-quality-monitoring
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/pakistan
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/karachi
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/south-asia