This article shows that in the presence of environmental externalities, it may be welfare enhancing to overcome a technological lock-in by a dead- end technology through governmental intervention. It is socially desirable to subsidize a dead-end technology if its environmental externality is...

Viewer's private information consumption generates external benefits for society, because information improves the ability of voters to control politicians. Our study compares two settings in a free-to-air TV market: a differentiated duopoly of private channels and an oligopoly with both private...

This paper analyzes greenhouse gas emissions that build up an atmospheric stock which depreciates over time. Weakly renegotiation-proof and subgame perfect equilibria in a game of international emission reduction exist if countries put a sufficiently high weight on future payoffs, even though...

If an emission reduction agreement with participation of all players is not enforceable because politicians are too myopic or not able to commit themselves to sustainable policies or costs of reducing emis- sions are too high, strategic investments in research and development (R&D) of green...

Rational individuals may use a Public Service TV channel as welfare improving institution to solve the paradox of rationally being uninformed. To induce voters to watch unbiased serious informational contend the Public Service TV channel is not only broadcasting (unbiased serious) news but also...