Voluntary contributions to public goods may be motivated by a desire to be a moral person, or in other words, by identity concerns. In a field experiment (N=373) we test how positive and negative shocks to subjects' environmental identity affect voluntary efforts for climate protection. In a...

This paper studies implications of uncertainty about the arrival date of a competitive CO2 backstop technology for the design of cost-effective CO2 emission trading schemes. For this purpose, we develop a dynamic general equilibrium model that captures empirical links between CO2 emissions...

This paper provides a quantitative comparison of the main architectures for an agreement on climate policy. Possible successors to the Kyoto protocol are assessed according to four criteria: economic efficiency; environmental effectiveness; distributional implications; and their political...