by By Jonathan Vatner | August 31, 2009

PLA cupPLA -- a plastic made from corn that commonly comes in the form of cold beverage cups -- is completely compostable, which means that it won't pollute our environment or sit in a landfill...IF it is disposed of properly. If reusable cups aren't available, consider PLA, but be sure to send the discards to a commercial composting or incineration plant. If that service is not available in your area, it's better to buy and recycle PET plastic cups. Order a case of 1,000 PLA cups for $97, including shipping, from Cup Depot (626-965-8882;