Acemoglu, Daron; Aghion, Philippe; Bursztyn, Leonardo; … - 2010
dirty innovation and production; (ii) optimal policy involves both 'carbon taxes' and research subsidies, so that excessive … creates environmental degradation. Research can be directed to improving the technology of machines in either sector. We … the switch to clean innovation under laissez-faire when the two inputs are substitutes. Under reasonable parameter values …