The nature of energy and material resources in an endogenous growththeory framework isclarified. This involves three modifications of the conventionaltheory. Firstly, multiple feedbackmechanisms or “growth engines” are identified. Secondly, a productionfunction distinguishesbetween resource...

Harmful algal bIoom species are the cause of important damages to marine living resources and human beings. These marine species are primarily introduced in North-European waters through ballast water, i.e. water trans-ported across the oceans so as to keep a vessel in balance. Port authorities...

This discussion paper resulted in a publication in <I>Environment, Development and Sustainability</I>, 2010, 12(1), 49-62.<P> What is a 'sustainable nation’ and how can we identify and rank ‘sustainable nations’? Are nations producing and consuming in a sustainable way? Aggregate indicators have...</p></i>

Expectations and information about the growth of GDP per capita have a large influence on decisions made by private and public economic agents. It will be argued here that GDP (per capita) is far from a robust indicator of social welfare, and that its use as such must be regarded as a serious...

Recent advances in evolutionary theory have important implications for environmental economics. A short overview is offered of evolutionarythinking in economics. Subsequently, major concepts and approaches inevolutionary biology and evolutionary economics are presented andcompared. Attention is...

A model framework, SIMBIOSES, is presented which describes economic activities and relatedmaterial, substance and energy flows in a multi-region and multi-sector economic system. Theconceptual design of the framework is discussed in relation to current issues on "dematerialization"and...

This discussion paper resulted in a publication in <I>Structural Change and Economic Dynamics</I>, 2013, 24, 141-156.<P> We address the notion of dynamic, endogenous diversity and its role in theories of investment and technological innovation. We develop a formal model of an innovation arising from the...</p></i>

The search for a framework to study globalisation, economics and ecology for nature conservation andbiodiversity protection requires the integration of concepts, theories and models from economics andecology. This allows for the study of interactions between economic and ecological processes,...

This discussion paper has resulted in a chapter in: (R.U. Ayres, D. Simpson, and M. Toman (eds.)), Scarcity and Growth in the Millennium, 2005, Resources for the Future, Washington DC, 177-97.

The debate on growth versus environment, including the more recent literature on sustainabledevelopment, is systematically evaluated in a stylized framework. Diffent perspectives on the conflictand relation between the economy, growth and the natural environment, have created a situationwhere...