Resources, Vol 3, Iss 3, Pp 544-574 (2014) Resources; Volume 3; Issue 3; Pages: 544-574 Resources : open access journal 3(3), 544-574 (2014). doi:10.3390/resources3030544 special issue: "Special Issue "How Much Environment Do Humans Need?+20-Reviewing Progress in Material Intensity Analysis for Transition towards Sustainable Resource Management" / Special Issue Editors: Prof. Dr. Stefan Bringezu, Guest Editor; Dr. Friedrich Hinterberger, Guest Editor; Prof. Dr. Christa Liedtke, Guest Editor"