Next time you’re buying those red cups for large parties, try grabbing these Greenware Cups. A new line by NatureWorks – who figured out a way to extract the starch from corn and convert it to sugar and lactic acid using fermentation – which results in a plastic called polylactide. All you really need to know is these are made entirely from corn, and they biodegrade in 50 days when met with 150º and 90% humidity (a.k.a composting conditions – don’t worry they will survive shelfing). Keep in mind these are only good for cold drinks. Now to get college students to use these… $105 for 1,000 cups. Buy Here.