Follow Ana's blog on this topic. Very rich material.
Also TNS Linked In Discussion:
Michael Donnelly • I like some of the elements of Theory U. I would encourage you to examine Future Search as a proven and meaningful way of engendering a long-lasting profound transformation of systems (in communities and in organisations). Many OD processes have been influenced by it and by common ancestors including Open Space and Appreciative Inquiry. I am interested in starting a conversation with The Natural Step community about bringing the two processes close together. Eric has started this work in Italy. There is much to be done. Find out more about Future Search at www.futuresearch.net and also get in contact with me at michael@secondnature.ie if you want to be part of this conversation