The main aim of this article is to discusses theoretical issues regarding the use of carbon taxes in climate policy. The issues include inter alia: the definition of carbon and CO2 taxes, the objectives of these instruments and the tax design (the point at which the tax is levied, tax rates, tax...

Can directed technical change be used to combat climate change? We construct new firm-level panel data on auto industry innovation distinguishing between "dirty" (internal combustion engine) and "clean" (e.g. electric and hybrid) patents across 80 countries over several decades. We show that...