Ever wonder why so much produce is wrapped in plastic shrink-wrap or in plastic packaging, including certified organic fruits and veggies? It can be frustrating when you're trying to limit your plastic consumption, but there is a reason: It turns out that when one piece of produce -- an apple, for example -- spoils, it can speed up the ripening process for all the other produce in that bin at the market. Keeping it separated helps with food waste. And organic produce can't touch conventional produce, which is why it's often separated by plastic. Frustrating, yes, which is why shopping at your local farmers market is often the greenest choice.