ABSTRACT
The Brundtland commission report in 1987 highlighted and stressed the need for ‘sustainable development’ defining it as ‘[. . .] development that meets the needs of the present without compromising the ability of future generations to meet their own needs’ (Brundtland Commission, 1987). Since the report, the terms ‘sustainability’ and ‘sustainable development’ have entered the mainstream, beginning with the United Nations Conference on Environment and Development held at Rio de Janeiro in 1992. In fact, the transition towards sustainability is viewed as one of the central challenges of the twenty-first century (see, for example, National Research Council, 1999; United Nations, 2000; United Nations, 2002).
