Perspective Green Economy Turning Over a New Leaf towards Sustainable Development? NINA NETZER AND JUDITH ALTHAUS(EDS.) June 2012 n It is evident that the»old« way of doing business, based on finite fossil fuels and the exploitation of natural resources, is no longer possible. Industrialised, emerging and developing countries therefore face the challenge of restructuring their current economic model in an ecologically sustainable way. n The necessary transformation of our economic systems represents a fundamentally different challenge for a host of actors, economic sectors and regions of the world. This is also reflected in the debate on the concept of the Green Economy: There is a struggle, on the one hand, for ideological hegemony with regard to conflicting concepts(green growth vs. de-growth), and on the other hand, for the remaining natural resources and growth opportunities. n The aim of this publication is to show, by highlighting different countries, how di­verse the debate on the Green Economy is and, at the same time, to elucidate the different challenges facing individual countries, given their respective structures and stages of development.