Calcutta: Calcutta's air is unbreathable in the current season, figures thrown up by the measuring stations of the state pollution control board reveal.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/winter-air-too-toxic-breathe-study
[2] http://admin.indiaenvironmentportal.org.in/category/author/jayanta-basu
[3] http://admin.indiaenvironmentportal.org.in/category/newspaper/telegraph-kolkata
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/west-bengal
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/kolkata
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vehicular-pollution
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/central-pollution-control-board-cpcb