This Diwali was quieter, but had higher pollution level, a survey by the Central Pollution Control Board (CPCB) has found.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/diwali-was-quieter-pollution-level-higher
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/indian-express-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/delhi
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/central-pollution-control-board-cpcb
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/diwali
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/rspm-pm-10