Introduction: will the revolution be institutionalized? / Amy Trauger, Priscilla Claeys and Annette Aurélie Desmarais -- States, institutions and food sovereignty -- State-led grassroots participation and Ecuador's land law / Karla Peña -- Exporting zero hunger : PAA Africa and the...

The phenomenon of non-random spatial concentrations of firms in one or few related sectors (clusters) is intensively debated in economic theory and policy. The euphoria about successful clusters however neglects that historically, many thriving clusters did deteriorate into old industrial areas....