In this paper, we combine together elements from the literature on endogenous growth and on funding of innovations developed by authors such as Arrow [1962], Tirole [1988], Scotchmer [1991,1999], Dasgupta et al. [1996], Gallini and Scotchmer [2003]. We shed a new light on several questions often...

We study an economy in which a final good is produced by two sectors. One uses a non-renewable and polluting resource, the other a renewable and clean resource. A specific type of research is associated to each sector. The public authorities levy a carbon tax and simultaneously subsidize both...

The "green paradox" literature points out that environmental policies which are anticipated to become gradually more stringent over time may induce a more rapid extraction of fossil fuels, thus having a detrimental effect to the environment. The manifestation of such phenomena has been...