Huge events cause huge amounts of waste, be it conventions, festivals or weddings.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/wasting-no-efforts-garbage-management
[2] http://admin.indiaenvironmentportal.org.in/category/author/aabha-anoop
[3] http://admin.indiaenvironmentportal.org.in/category/newspaper/hindu-new-delhi
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/waste-management
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/kerala
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/waste-disposal
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/kozhikode-t
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/waste-recycling
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/solid-waste