a recent study conducted by the Nepal forum of Environmental Journalists ( nefej ) has confirmed that Kathmandu is today one of the most polluted cities among the South Asian countries, its air quality levels being comparable to Mexico city
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/nepal-s-dirty-air
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/down-earth
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vehicular-pollution
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/diesel
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/nepal