Four billion tones is the amount of waste produced by the OECD countries (Organization for Economic Cooperation and Development) in the 1990s. Rising incomes and economic growth favoring consumption
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/good-student-european-union
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/bangladesh-observer-dhaka
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/solid-waste