Bottom-up approaches towards a global climate agreement : an overview -- Carlo Carraro, Christian Egenhofer and Noriko Fujiwara -- Regional and subglobal climate blocs : a cost-benefit analysis of bottom-up climate regimes / Barbara Buchner and Carlo Carraro -- Do regional integration approaches hold lessons for climate change regime formation? : the case of differentiated integration in Europe / Noriko Fujiwara and Christian Egenhofer -- Trade, the environment and climate change : multilateral versus regional agreements / David Kernohan and Enrica De Cian -- Participation incentives and technical change : from top-down to bottom-up climate agreements / Barbara Buchner and Carlo Carraro -- Bottom-up approaches to climate change control : some policy conclusions / Carlo Carraro and Christian Egenhofer.