The BioRegio contest and the BioProfile contest initiated by the German Federal Government have drawn much international attention as prototypes of a new kind of technology policy aiming at the exploitation of regional innovation and growth potential through clustering. There is, however, little...

Endogeneous growth theory views externalities and particularly externalities associated with knowledge spillovers as the engine of economic growth. In some influential papers (e.g. Glaeser et al. 1992) it is argued that these knowledge spillovers do not transmit costlessly over space. Rather,...