Following the recent announcement in the railway budget to make Rameswaram a green station, the Madurai railway division has started allotting more bio-toilet fitted coaches to the station.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/rameswaram-station-goes-green-gets-more-bio-toilet-fitted-railway-coaches
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/times-india-madurai
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/tamil-nadu
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/madurai-t
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/rail-transport
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/toilets
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/sanitation