How Green Are Wine Bottles? | Grande Passione | Scoop.it
 
Glass cullet must be sorted by color before it can be recycled into other glass products. Photo source: State of Washington Department of Ecology

San Rafael, Calif.—The Glass Packaging Institute and its members proudly boast that glass is “endlessly recyclable,” and thus eco-positive. How effective this is in practice depends upon local recycling programs that deliver cullet (re-usable glass) to glass plants.