While human life has perennially been under threat of pollution, monuments haven't been spared either and are being adversely impacted by contaminated air, experts say.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/pollution-impact-monuments-slow-long-lasting-experts
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/times-india-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/monuments
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/taj-mahal
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/nitrogen-dioxide
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/carbon-dioxide
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vehicular-pollution