Cities increasingly address climate change, e.g. by pledging city-level emission reduction targets. This is puzzling for the provision of a global public good: what are city governments' reasons for doing so, and do pledges actually translate into emission reductions? Empirical studies have...

The negotiations for a global climate agreement recognize that substantial and additional funds need to be generated for assisting adaptation in developing countries. Currently, the 2% adaptation levy (AL) on the clean development mechanism (CDM) is intended to serve this purpose under the Kyoto...

We introduce endogenous directed technical change into numerical integrated climate and development policy assessment. We distinguish expenditures on innovation (R&D) and imitation (international technology spillovers) and consider the role of capital investment in creating and implementing new...