In June of 2007, two of the authors, Paul Baer and Tom Athanasiou, moved the project forward by way of a study for the Heinrich Böll Foundation with the snappy title of A Brief, Adequacy and Equity-Based Evaluation of Some Prominent Climate Policy Frameworks and Proposals, which briefly compares six approaches to a post-Kyoto climate regime, all of which claim to be fair. One of them, unsurprisingly, is (and early versions of) Greenhouse Development Rights. All were evaluated on their own terms, and also in terms of its ability, or potential ability, to deliver the all-important quality that we call “developmental equity.”