As the world considers greener forms of economic growth, countries and sectors are beginning to position themselves for the emerging green economy. This paper combines patent data with international trade and output data in order to investigate who the winners of this "green race" might be. The...

International carbon markets have grown quickly in recent years, but have also experienced serious problems and faced harsh criticism. This paper looks at the history of climate science, at how the economics of emissions trading developed, and at the formation of international institutions to...

Environmental regulations have consistently been found to spur innovation in "clean" technologies, with one significant exception. Past cap-and-trade programs have encouraged adoption of existing pollution control technologies, but had little effect on innovation. Several explanations have been...

The Clean Development Mechanism (CDM) provides some basic safeguards to ensure that HFC-23 reductions are additional, primarily aimed at establishing a realistic baseline scenario for HFC-23 projects. However, there have long been doubts about the additionality of HFC-23 projects (Wara,...

This paper presents a method for estimating treatment effects of regulations when treated and control firms compete on the output market. We develop a GMM estimator that recovers reduced-form parameters consistent with a model of differentiated product markets with multi-plant firms, and use...