Constructing Meaningful Sustainability Indices -- A Framework for Indicators to Monitor the EU Sustainable Development Strategy -- Measuring Corporate Sustainability Performance and Its Impact on Corporate Financial Performance -- Impact Assessment and Sustainability -- Should Environmental Policy Discriminate Between Exposed and Sheltered Sectors? -- Ecological-Economic Models for Improving the Cost-Effectiveness of Biodiversity Conservation Policies -- Vision, Analysis, and Future Pathways in Transport Research -- Transportation and the Environment — Perspectives for Future Research -- Research Issues in Transport Economics: Dynamics, Integration, and Indirect Effects -- Traffic and Environment: Policy Maker’s Response -- Liberalised Energy Markets — Do We Need Re-Regulation? -- Energy Markets — Research Issues and Policy Needs -- An Agenda for Energy Policy — An Element of Innovation Policy -- Energy Market Regulation: Impacts of EU Research -- Why Is Economic Theory Ignored in Environmental Policy Practice? -- On the Political Economy of Economic Policy Advice — With Applications of Environmental Policy -- Insights in Political Processes on the Ecological Tax Reform from a Ministerial Perspective.