Nature-Based Solutions concepts and practices are being used worldwide as part of attempts to address societal challenges but have also been criticised for not dealing with deeper transformations needed to face urgent issues including biodiversity loss, climate change and inclusion. In this paper, we explore how an inclusive, integrated and long-sighted approach, emphasising a more radical integration of nature within cities, might support the transformations needed to endure major contemporary challenges. Addressing important emerging critiques of Nature-Based Solutions, we consider the potential of a more incisive form of Nature-Based Thinking (NBT) in cities, based on more holistic perspectives. The paper draws on a reflective and iterative research process that engaged both the research and practice communities through a symposium and a series of futures workshops that together explored the potential of NBT to develop future nature-cities relations in Europe and Latin America. The results of the reflective process suggest that notions of nature with people—not for people— new organisational structures, and the intention and capacity to apply long-term perspectives, are needed when planning for NBS interventions aimed at sustainable urban development. This includes developing a cultural-structural change based on new and inclusive understandings of human–nature relations, and novel governance paradigms that allow cross-sectoral coordination and engagement of local stakeholders beyond formal organisational structures.

The dissemination of citizen participation in policymaking has increased considerably worldwide, as in the case of participatory budgeting, considered as the best-known democratic innovation in this field of study and practice. In order to share empirical knowledge about participatory budgets, the article provides a comparative analysis of patterns of dissemination in Brazil and Portugal. These countries were selected for being paradigmatic cases in the dissemination of participatory budgets. The comparative analysis of sociopolitical contexts and institutional designs sheds light on similarities and differences on democratic frameworks, political and non-political agents, target public, approach to participation, and main goals. Findings point to similarities in the passage from the dictatorial to the democratic regime in both countries, and differences in the role of political parties and social agents behind the dissemination. It is within such sociopolitical contexts that non-associated citizens are the target of participatory budgets in both countries, although they are differently approached because address different goals.

Worldwide, active aging policy calls for greater participation of senior citizens in the social, economic, and political realms. Despite emerging evidence of initiatives engaging senior citizens in social activities, little is known about the use of participatory approaches in the design and/or implementation of policies that matter to older citizens. This article identifies initiatives facilitating the civic participation of older people in policy-making in European Union member and associate states, drawing on a review of the literature, consultation of national policy experts, and exemplary case studies. Four main patterns of senior civic participation are identified: adopting consultative or co-decisional participatory approaches in policy design or policy implementation. The four are represented to varying degrees at different geographical levels (national, regional, local), with different actor configurations (appointed, elected/nominated, corporate representation), and with varying degree of institutionalization (temporary/permanent). Case studies illustrate approaches taken to enhance the quality and effectiveness of public services for senior citizens. Future research should strengthen this line of enquiry to cast further light on conditions facilitating the civic participation of senior citizens.

There is rising scholarly and political interest in participatory budgets and their potential to advance urban sustainability. This article aims to contribute to this field of study through the specific lens of the city of Lisbon’s experience as an internationally acknowledged leader in participatory budgeting. To this end, the article critically examines the lessons and potential contribution of the Lisbon Participatory Budget through a multimethod approach. Emerging trends and variations of citizen proposals, projects, votes, and public funding are analysed in tandem with emerging key topics that show links and trade-offs between locally embedded participation and the international discourse on urban sustainability. Our analysis reveals three interconnected findings: first, the achievements of the Lisbon Participatory Budget show the potential to counteract the dominant engineered approach to urban sustainability; second, trends and variations of the achievements depend on both citizens’ voice and the significant influence of the city council through policymaking; and, third, the shift towards a thematic Green Participatory Budget in 2020 was not driven by consolidated social and political awareness on the achievements, suggesting that more could be achieved through the 2021 urban sustainability oriented Participatory Budget. We conclude recommending that this kind of analysis should be systematically carried out and disseminated within city council departments, promoting much needed internal awareness of PBs’ potential as drivers of urban sustainability. We also identify further research needed into the sustainability potential of green PBs.

Worldwide, participatory processes have expanded by covering a wide range of policy areas, including urban regeneration. Acknowledging the formulation of success as the first methodological step for the evaluation of participatory processes, the article discusses insights and perplexities emerging from the BipZip Programme in Lisbon. The proposal of an alternative agenda builds on the need to provide the formulation of success with information on the macro, meso and micro contexts, to be collected through the participation of local partners and political/administrative agents. Theoretical and empirical knowledge concur to the international debate on the evaluation of citizen participation in urban regeneration.