Planning practice in the Global South often defines a border between formal and informal developments ignoring the complex and nuanced reality of urban practices and, consequently, worsening segregation. This article proposes an alternative view of socio-spatial segregation that shifts the distinction between formal/informal towards one that emphasises access to opportunities and their relationship with the spatial structure of the city. Under this alternative framework, applied to the case of the Valle Amauta neighbourhood in Lima, Peru, we reflect on how socio-economic activities, shaped by spatial conditions and social practices, increase or reduce socio-spatial segregation. Our findings suggest that a shift towards strategies aimed at increasing accessibility to centrality, provided by the density of social and economic activities, could offer new opportunities for planning practice and theory in the Global South.@en

Food waste represents the largest fraction of the municipal solid waste generated in Europe and its management is associated to suboptimal performance in environmental, health, and social dimensions. By processing detailed multi-fold local data as part of a comprehensive and broadly understandable sustainability framework, this study quantifies the environmental and socio-economic impacts of household food waste management in the Amsterdam Metropolitan Area based on priorities set by local stakeholders. Five alternative short-term management options have been assessed against the current system, relying on poor separate collection and incineration. Four options involve separate collection of food waste followed by biological treatments (home/centralised composting and anaerobic digestion) while one involves a mix of separate collection and centralised mechanical-biological treatment followed by anaerobic digestion. Among these, separate collection followed by anaerobic digestion coupled with effective nutrient and energy recovery is, according to our findings, the preferred option to improve the sustainability of the current system in all dimensions considered, except for the economic pillar due to the collection costs. Home and centralised composting as well as mechanical-biological treatment are associated to more adverse impacts based on our findings. The study informs local stakeholders and authorities on the potential consequences of their options, thereby allowing them to make sound choices for a future waste and circular economy strategy.@en