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Waste management represents a challenge for public authorities due to many reasons such as increased waste generation following urban population growth, economic burdens imposed on the municipal budget, and nuisances inevitably caused to the environment and local inhabitants. To optimize the system from a sustainability perspective, moving the transition towards a more circular economy, a better understanding of the different stages of waste management is necessary. A review of recently developed sustainability frameworks for waste management showed that no single framework captures all the instruments needed to ultimately provide a solid basis for comprehensive analyses of the potential burdens associated with urban waste management. Bearing this limitation in mind, the objective of this research is to propose a conceptual and comprehensive sustainability framework to support decision-making in waste management of European cities. The framework comprises a combination of methods capable of identifying future strategies and scenarios, to assess different types of impacts based on a life cycle perspective, and considers the value of waste streams, the actors involved, and possible constraints of implementing scenarios. The social, economic, environmental, technical and political domains are covered, and special attention is paid to impacts affecting foremost the local population.

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Improving waste and resource management entails working on interrelations between different material flows, territories and groups of actors. This calls for new decision support tools for translating the complex information on flows into accessible knowledge usable by stakeholders in the spatial planning process. This article describes an open source tool based on the geodesign approach, which links the co-creation of design proposals together with stakeholders, impact simulations informed by geographic contexts, systems thinking, and digital technology—the Geodesign Decision Support Environment. Though already used for strategic spatial planning, the potential of geodesign for waste management and recycling is yet to be explored. This article draws on empirical evidence from the pioneering application of the tool to promote spatially explicit circular economy strategies in the Amsterdam Metropolitan Area.

The Amsterwarm project investigates the urban heat island of Amsterdam, the vulnerability of its population, the energy efficiency of its buildings and landuse. A novel mapping approach provides insights into the questions of what causes the urban heat island and who will be affected by it. Landuse does affect the surface temperature. The difference between the areas in the city with the least and the greatest impervious surface coverage accounts for an average land surface temperature difference of 11.6 C per hectare. The study demonstrates furthermore that the vulnerability of people and buildings to the urban heat island effect is a local condition in which the energy efficiency of buildings, quality of life and demographic factors should all be considered in an approach that is sensitive to place. Practical application: The typological maps will allow local authorities to prioritise adaptive actions in urban planning in response to the urban heat island, an emerging climate-related challenge that has a significant impact on the comfort and health of its citizens and on the (future) energy use required for cooling buildings. Raising the albedo in those areas of the city that are dominated by impervious surface cover seems an effective adaptation strategy, suitable to a city such as Amsterdam that no longer builds on green field sites but only builds as possible within the envelope of the existing city. Improving the quality of life in neighbourhoods and the energy efficiency/climate proofing of the building stock could also be prioritised in the identified neighbourhoods.

The concept of circular economy (CE) is high on the agenda of many planning agencies in European countries. It has also become a prominent issue in European academic education institutions. It is expected that spatial planning and design can support and add the spatial quality dimension of such a transition towards CE. However, incorporating the concept of CE in an integrative manner in urban design and planning courses is challenging because of its metabolic and complex nature. This article presents the first results of integrating design-teaching activities at a faculty of architecture with an H2020-financed research project. The integration of research and design education provided the students with a situated and indeed transdisciplinary learning environment. Students understood that they needed to address challenges from a systemic perspective rather early in the design process, meaning to understand what the relations between different subsystems and their spatial structures are. Furthermore, the experiment provided evidence that the eco-innovative solutions developed by the students are seen as an effective option to achieve objectives for a transition towards CE by stakeholders.

Highlights Multi-fold local & global data collected and processed into a comprehensive framework Anaerobic digestion with effective nutrient recovery appears the best option All alternative strategies to incineration increase food waste management costs Aggregation makes findings accessible to the widest possible audience and stakeholder The study informs stakeholders and authorities on the consequences of their options

To improve the ecosystem service provided by open spaces in dispersed urban areas is a key challenge for sustainable spatial development in Europe. The typology presented in this article illustrates the different potentials that open spaces in territories-in-between have across 10 cases in Europe. Unlike other typologies, neither function nor form is used for the classification, but the potential interaction of open spaces with social, technical and ecological networks. Therefore, the typology informs regional spatial planning and design about the potential ecosystem services in networked urban regions. Thereby the importance of territories-in-between, which are often neglected by mainstream spatial planning and design, for sustainable development is highlighted.