In most models of transboundary pollution, lack of international cooperation does not cause any inefficiency within each country. The paper shows that this result is only valid in the hypothetical case of no international trade. With international trade, we get a domestic inefficiency in...

The Clean Development Mechanism (CDM) offers abatement cost savings under the Kyoto Protocol by allowing credits for emission reductions obtained in signatory developing countries. The paper shows that it is necessary to include technology transfers in the CDM to obtain correct incentives for...

For sufficiently low abatement costs many countries might undertake significant emission reductions even without any international agreement on emission reductions. We consider a situation where a coalition of countries does not cooperate on emission reductions but cooperates on the development...

That climate policies are costly is evident and therefore often creates major fears. But the alternative (no action) also has a cost. Mitigation costs and damages incurred depend on what the climate policies are; moreover, they are substitutes. This brings climate policies naturally in the realm...

Auf dem Weltklimagipfel in Kopenhagen im Dezember 2009 wird ein globales Klimaabkommen verhandelt. Können dort Strukturen geschaffen werden, die einen effizienten und kostengünstigen Klimaschutz ermöglichen? Entscheidend sei es, nach Meinung von Hubertus Bardt, Institut der deutschen...

Am Ende des Klimagipfels in Kopenhagen, der Anfang Dezember des vergangenen Jahres stattfand, stand lediglich der so genannte »Copenhagen Accord«, da sich die Teilnehmer nicht auf einen völkerrechtlich bindenden Vertrag einigen konnten. Vereinbart wurde, dass die Länder bis zum 31. Januar...