Copenhagen has been struggling with air pollution for many years now. Pollution from lorries, vans, buses and cars each year costs lives.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/reduced-pollution-can-add-year-lives-copenhageners-2040
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/phy
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/copenhagen
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vehicular-pollution
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health-effects
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/nitrogen-dioxide