Links:
[1] http://admin.indiaenvironmentportal.org.in/news/internet-bins-smart-solar-powered-trashcans-colombian-cities
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/guardian-uk
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/solid-waste
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/waste-management
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/colombia
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/solar-energy