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...

Major carbon-pricing systems in Europe and North America involve multiple 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 energy---that...

Plurilateral initiatives are again gaining importance in climate diplomacy as a complement to multilateral efforts – not least in view of the lack of progress in implementing the Paris Agreement and more difficult conditions in the UN process. New alliances are expected to facilitate agreement...

Under the 2022 Inflation Reduction Act, the United States has for the first time implemented a methane emissions fee as a backstop to new methane regulations in the oil and gas sectors. The European Union is also implementing methane regulations on fossil energy. Methane is a short-lived but...

Economic development and climate change constitute two of today's major international policy challenges. While development cooperation has long been on the political agenda, addressing global climate change has gained policymakers' attention more recently. Transfers for financing single projects...

Using new surveys on more than 40 000 respondents in twenty countries that account for 72% of global CO2 emissions, we study the understanding of and attitudes toward climate change and climate policies. We show that, across countries, support for climate policies hinges on three key factors:...