Key elements, stages and tools for a sustainable world: an introduction to this special volume

This special volume of the Journal of Cleaner Production was developed primarily based on materials presented at the 2nd International Workshop Advances in Cleaner Production held in São Paulo, Brazil, in 2009. The content reflects the growing awareness of the urgent and unavoidable need for making changes to help transform unsustainable to sustainable societies.The eleven papers provide different viewpoints to help society make progress on the journey towards sustainability. Key elements of this urgent journey are addressed in this collection of papers; some challenge society to address the problems in a systematic manner and some underscore the essentiality of proper planning by using green teams, or a Sustainable Environmental Management System. Other authors explored the role of proactive regulation and economic instruments to promote environmental performance improvements. Innovation through learning and promotion of multidisciplinary thinking as well as transference of information and knowledge between academy and industry are key aspects explored. Their inputs enabled this editorial team to propose alternatives uses for ‘wastes’, for substituting one raw material for another, which is environmentally and economically advantageous, for changing industrial process to decrease Greenhouse Gas emissions, or for optimizing diverse processes. The role of the Clean Development Mechanism as a promoter of implementation of innovative cleaner technologies in host countries is discussed. A systemic assessment tool, emergy synthesis, was employed to evaluate a reverse logistic enterprise from an environmental perspective.