@petergleick - Make plastic recycling real; make plastic a closed cycle.
Yes, I know the problems with that. If we can do it, though, that's OK. And I wish we were seriously attempting it. Plastic is nice stuff in a lot of ways.
The price of recycling should part of the cost of plastic. And if it turns out that we really can't, in an economically viable sense, recycle plastic, then it gets expensive and we mostly stop using it.
And, well, that's a market decision, now innit?