The price of being a prosperous, industrial city could be a few years of residents' lives, so says a paper by a Harvard professor.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/ludhiana-worries-over-its-pm
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/times-india-ludhiana
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ludhiana-d
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/punjab
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/rspm-pm-10
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health-effects
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/asthma
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/lung-cancer
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/respiratory-diseases
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/state-pollution-control-board-spcb-0