Since current policies will not lead to a sustainable future, at either the regional or the global level, region-specific studies were undertaken for GEO-2000 to investigate possible alternative policies. In each study, several alternative policy responses were identified to address the issues at hand. Each of the selected responses has been implemented elsewhere with success. The results confirm that, in principle, the knowledge and technological base to solve environmental issues are available, and that if these alternative policies were implemented immediately and pursued with vigour they could indeed set the world on a more sustainable course.