We study the impact of collective effort in R&D in adaptation technologies, and also spillover effects on formation and size of stable international environmental agreements (IEAs). Our results suggest that it is possible to have more than one size of stable IEA. We can achieve a superior...

A multinomial logit model is estimated across the crop choices of a sample of thousands of Chinese farmers. As temperatures warm, farmers are more likely to choose cotton and maize, but less likely to choose soybeans, and vegetables. As precipitation increases, farmers are more likely to choose...