Climate change is real and dangerous. Exactly how bad it will get, however, is uncertain. Uncertainty is particularly relevant for estimates of one of the key parameters: equilibrium climate sensitivity--how eventual temperatures will react as atmospheric carbon dioxide concentrations double....

The literature on public goods provision has experienced a significant increase since Samuelson's (1954) paper. The common goal is to make the model more suitable to describe a more general class of non rival goods. However, there does not seem to be a consensus in the literature on the form of...