If you have already made the transition to bringing your reusable drink or coffee cup mug to commercial establishments, you are to be commended. But if you have forgotten to bring it one day, you can still make a difference by refusing the plastic cup lid. These lids are usually made of polystyrene and are not recyclable. A recent estimate is that about 500 billion disposable coffee cups are produced each year, so that’s a lot of plastic lids too. Just put less coffee in that cup to avoid spillage, and skip the lid!