We conduct a large-scale …eld experiment with 2,440 subjects in whichwe exogenously vary the price of contributing to the closest empiricalcounterpart of an in…nitely large public good, climate change mitigation.We …nd that the price e¤ect is robust and negative, but quantitativelyweak, with...

We study the optimal R&D trajectory in a setting where new technologiesare never perfect backstops in the sense that there is no perfectlyclean technology that eventually solves the pollution problem once andfor all. New technologies have stings attached, i.e. each emits a specificstock...