This is obviously a very serious problem. However, I don't see many solutions coming out of developed countries such as the US - even the most progressive European countries still have a major waste problem. People in many developed countries seem to feel proud when they manage to recycle perhaps 10-20% of their cumulative waste, with the likelihood that the total volume of waste generated is still going up. If the rich economies are unable to show a viable pathway to the kind of green economy you highlight then how do you expect developing countries to manage it? For me this underlines the hypocrisy of green growth - nobody has yet shown it to be possible. And while cities are undoubtedly at the forefront, a real solution will be heavily reliant on national policies on a whole range of issues that go to the heart of our economic system - not just mandating more recycling!