o World, edited by Joseph E. Aldy and Robert N. Stavins Cambridge: Cambridge University Press, 2007, 408 pp., £18.99, paperback Architectures for Agreement is an edited collection of papers by a number of highly qualified authors which canvasses options for international cooperation in addressing global climate change. The book takes an interesting approach to the collective action problem in a post-2012 world by considering not only possible top-down international frameworks based on national or private sector company targets, but al