2. Conceptual and stylised representation of a decoupling graph. Source: TNEP (2008) "Such growth rates could be environmentally sustainable if industrialized nations can continue the recent shifts in the content of their growth towards less material- and energy- intensive activities and the improvement of their efficiency in using materials and energy. Our Common Future

3. "I was thrilled and impressed reading this manual that features the integrated approach towards resource productivity and, ultimately, sustainability both at small and large scale. Ernst von Weizsäcker The authors, in producing this introductory, technical, teaching material and these important examples, have provided a publication which can, and must, be widely used in our university and technical training institutions. Barry J. Grear AO

4. "The exciting thing about Factor 5 is the combination of boldness and realism. An 80 percent gain in resource productivity is precisely what is needed to get civilization back onto an economic path that is environmentally sustainable. Lester R. Brown Factor 5 provides compelling arguments and examples that sustainable business is achievable and profitable on a large scale and that companies play a key role in creating sustainable development. Stefan Schaltegger

5. "I commend the team from The Natural Edge Project and their partners for undertaking to develop a response to 'Our Common Future' to mark its 20th anniversary." Gro Brundtland The Natural Edge Project is to be commended for tackling this vitally important issue and highlighting where in the world already communities, regions and nations are creating solutions to this great challenge of our time. R.K. Pachauri