Climate risks have always been amongst the most important faced by human societies. Today the concern has new elements: the global nature of possible changes and the fact that they are driven by human activity. The risks posed by climate change are therefore endogenous and so outside of the...

This paper studies countries' incentives to develop advanced pollution abatement technology when technology may spillover across countries and pollution abatement is a global public good. We are motivated in part by the problem of global warming: a solution to this involves providing a global...