The document discusses the concept of industrial ecology and outlines several key topics: 1. It defines industrial ecology as the study of technological systems and their interactions with the natural world to enable global sustainability. 2. It provides examples of tools used in industrial ecology like life cycle analysis and material flow accounting. 3. It discusses the dimensions of industrial ecology including its scientific, temporal, spatial, sectoral aspects as well as development in different regions. 4. Specific cases like the industrial symbiosis in Kalundborg, Denmark and the Hammarby Model of an urban residential area with reduced environmental load are examined.