This article evaluates the environmental effectiveness and economic efficiency of the Kyoto Protocol after the Bonn Agreement and the Marrakesh Accords. The US withdrawal has by far the greatest impact in reducing the environmental effectiveness, lowering the price of traded emission permits and...

The Triptych approach differentiates emission reduction targets under a future international climate agreement based on technological considerations at the sector level. The advantage of such a sectoral approach is that it allows for discussions on worldwide competing sectors and on the role of...