This book examines regional responses to marginality by highlighting social innovation, local capacity and new path formations in what are often seen as economically weak regions where policy and institutional considerations play a key role. Divided into three parts, it covers a wide range of topics related to geographical marginality from various angles, on both regional and local scales. The first part focuses on the role of social innovation and illustrates the themes of social innovation and new localism, local revitalization and social entrepreneurship. The second part then addresses the issues of economic responses, valorization, resource use and local action in response to marginalization. Lastly, the third part explores various policies and measures taken to respond to marginality and intensify regional development in marginal areas.