The clamshell containers that hold burgers and other fast-food sandwitches continue to evolve. Now, scientists at the US Agriculture Dept. are designing biodegradable clamshells made from wheat.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/greener-way-pack-burger-0
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/business-week-new-york
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/industry