Major carbon-pricing systems in Europe and North America involve multiple jurisdictions (countries or states). Individual jurisdictions often pursue additional initiatives—such as unilateral carbon price floors, legislation to phase out coal, aviation taxes or support programs for renewable...

“Hopes are fading that a strong treaty will emerge from next month’s negotiations in Copenhagen,” according to Nature Geoscience (2009/11). This short book starts from Nature’s critique of the “targets and timetables” approach to international agreement and describes an international...

This paper discusses and analyzes various international mechanisms to scale up global action on climate mitigation and address the policy gap in this area. Despite the new commitments made at COP 26, there is still an ambition and a policy gap at the global level to keep temperature increases...