Public-private partnerships turn waste into cash | GreenBiz.com

via Diigo http://www.greenbiz.com/blog/2013/05/14/public-private-partnerships-turn-waste-cash?mkt_tok=3RkMMJWWfF9wsRoku6XOZKXonjHpfsX56uotWaK2lMI%2F0ER3fOvrPUfGjI4ARctnI%2BSLDwEYGJlv6SgFSLHEMa5qw7gMXRQ%3D