KOLKATA: The sense of despair over the foul air that hangs like a shroud over Kolkata can change to hope if it learns from American cities that were as polluted but have since cleaned up their act,
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/diplomats-green-tip-learn-us-cities
[2] http://admin.indiaenvironmentportal.org.in/category/author/subhro-niyogi
[3] http://admin.indiaenvironmentportal.org.in/category/newspaper/times-india-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/regulations
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/united-states-america-us
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/two-wheelers
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vehicular-pollution
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/auto-technology
[13] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution-control