Three long-haul flights of approximately 10 hours each can generate up to one tonne of waste
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/human-digestive-system-inspires-idea-flight-waste-management
[2] http://admin.indiaenvironmentportal.org.in/category/author/kc-deepika
[3] http://admin.indiaenvironmentportal.org.in/category/newspaper/hindu-new-delhi
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/waste-disposal
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/indian-institute-science-iisc
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/plastics
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/organic-waste
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/solid-waste