Monitoring sustainability and indicators 9. A number of papers dealt with the development of assessment criteria representing the level of sustainability and to support green enterprises. Several new indicators have been suggested at the conference. It is important to continue the debate in this area with a view to arriving at a consensus of indicators and criteria for assessing the attainment of sustainability and for minimising the environmental impact of human activities. The indicators used must be unambiguous and easy to access and apply.
Sustainability is an essential objectives for the future of humanity.
Although the papers presented at the conference have demonstrated that the concept is well understood, it is difficult to provide an operational definition in view of the multi-dimensional nature of the concept. Nevertheless, most authors described strategies, technologies and programmes that are likely to contribute to sustainability of cities.