@Monika - Polyethylene packaging seems like a necessary evil, maybe just for now. However, I kind of feel like if there was some environmentally friendly alternative, we would have found it by now.
Being "green" has been a pretty big trend in marketing in the last decade or so. I'm sure some company would love to advertise they found a "green" alternative to polyethylene. So if no one has jumped on this, maybe there isn't a green alternative to polyethylene.