What would it take to get rid of disposable cups? That was a question MIT Sloan senior lecturer Peter Senge raised in an interesting keynote address this morning at the MIT Sustainability Summit 2010. Senge, who is the author of well-known books such as The Fifth Discipline and The Necessary Revolution, focused on the need for collaboration among unlikely partners to achieve real progress on sustainability issues – and convert our “take-make-waste” economy into a new, more sustainable economy. Senge used the example of disposable coffee cups (a topic apparently on his mind because he came to the Sustainability Summit from a Starbucks-convened cup summit taking place down the street) to get the MIT Sustainability Summit attendees thinking about the need for collaboration in sustainability projects.