A growing number of GHG emissions trading schemes are being implemented at regional or national levels. However, even as the number of different schemes grows, few linkages exist between them. Major cap-and-trade proposals are currently at important stages in their development, especially in the United States, Japan and Australia, some of which explicitly emphasize the aim of linking with other schemes. One of the strategic goals of European climate policy is linking the EU ETS with other comparable schemes. The research presented in this volume is on actual economic, political and...