Challenges

19 pages, 1908 KB

Open AccessReview

Mitigating Greenhouse Gas Emissions Through Sustainable Animal-Source Food Production

by Sadhana Ojha, Rishav Kumar, Meena Goswami, Vikas Pathak, Kritima Kapoor and Mukesh Gangwar

Challenges 2026, 17(1), 7; https://doi.org/10.3390/challe17010007 - 2 Feb 2026

Livestock contributes to economic stability and food security by providing income, employment, and nutrient-dense animal-source foods, particularly in low- and middle-income regions. However, the sector is also a major source of anthropogenic greenhouse gas emissions, primarily methane, nitrous oxide, and carbon dioxide, raising [...] Read more.

Livestock contributes to economic stability and food security by providing income, employment, and nutrient-dense animal-source foods, particularly in low- and middle-income regions. However, the sector is also a major source of anthropogenic greenhouse gas emissions, primarily methane, nitrous oxide, and carbon dioxide, raising growing environmental and public health concerns. This review synthesizes current evidence on strategies to mitigate greenhouse gas emissions from livestock systems while safeguarding productivity, food security, and human health. Emphasis is placed on the need to balance supply-side mitigation measures with demand-side interventions to avoid unintended nutritional and socio-economic consequences. Key supply-side approaches discussed include genetic improvement, optimized feeding strategies, manure and land resource management, and system-level efficiency gains. Demand-side strategies include food loss and waste reduction, shifts toward sustainable dietary patterns, and the development of alternative protein sources. Central to this review is the integration of these approaches within a planetary health framework, highlighting the interconnectedness of environmental sustainability, human and animal health, and socio-economic resilience. The review underscores that mitigation policies should be context-specific, equity-focused, and health-centered to ensure that climate goals are met without compromising access to affordable, nutritious foods. Collectively, the evidence indicates that coordinated policy action across production, consumption, and health systems is essential for achieving sustainable animal-source food production with reduced climate impact. Full article

(This article belongs to the Section Food Solutions for Health and Sustainability)

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21 pages, 2627 KB

Open AccessPerspective

Embodied Neuroplasticity: Exploring Biological and Molecular Pathways of Inner Development for Planetary Health

by Karen B. Kirkness

Challenges 2026, 17(1), 6; https://doi.org/10.3390/challe17010006 - 30 Jan 2026

Abstract

Understanding how inner development capacities are embodied at biological levels remains an underexplored dimension of planetary health research. The aim of this viewpoint is to provide transdisciplinary integration across neuroscience, cell biology, education, and social systems toward addressing planetary health challenges. Despite growing [...] Read more.

Understanding how inner development capacities are embodied at biological levels remains an underexplored dimension of planetary health research. The aim of this viewpoint is to provide transdisciplinary integration across neuroscience, cell biology, education, and social systems toward addressing planetary health challenges. Despite growing recognition of the Inner Development Goals (IDG) framework as complementary to the UN Sustainable Development Goals, the biophysical dynamics underlying personal and collective transformation remain largely unexplored. This viewpoint presents key molecular pathways that may underpin the Embodied Neuroplastic Resilience Model (ENRM) via calcium signaling and hyaluronan (the CHA axis). This viewpoint explores educational and therapeutic implications while simultaneously illuminating how socioeconomic inequalities constrain access to neuroplasticity-supporting practices. Four key conclusions emerge: (1) The CHA axis provides a compelling mechanistic framework for understanding how bodily experiences can reshape neural circuits through calcium signaling and hyaluronic acid matrix dynamics; (2) Mapping molecular mechanisms to complex human inner development capacities remains provisional, requiring further interdisciplinary investigation; (3) Socioeconomic inequality creates structural barriers to neuroplasticity and inner development, necessitating an integrated approach that connects mechanistic understanding with equitable access to transformative practices; (4) Enhanced understanding of embodied neuroplasticity must serve compassion and systemic transformation, moving beyond individual optimization toward collective well-being. By bridging neuroscience and sustainability frameworks, this viewpoint calls for a nuanced understanding of inner development that transcends individual optimization and emphasizes collective transformation. Full article

(This article belongs to the Special Issue The Relationship between Sustainability and Inner Development: Towards More Integrative Worldviews, Paradigms, and Actions)

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22 pages, 659 KB

Open AccessArticle

Young Adults’ Perceptions of Sustainable Diets: A Comparison Across Five High- and Middle-Income Countries

by Jess Haines, Kate Parizeau, Katherine F. Eckert, Fumi Hayashi, Yukari Takemi, Siti Helmyati, Widjaja Lukito, Ludovica Principato, Martina Toni, Nimbe Torres, Diana De Jesús-Jacintos and Wendelin Slusser

Challenges 2026, 17(1), 5; https://doi.org/10.3390/challe17010005 - 24 Jan 2026

Abstract

Sustainable diet transitions are required to protect human and planetary health, and consumers are important food systems actors who can foster positive changes. However, little is known about how consumers perceive the concept of sustainable diets. This study explored perceptions of sustainable diets [...] Read more.

Sustainable diet transitions are required to protect human and planetary health, and consumers are important food systems actors who can foster positive changes. However, little is known about how consumers perceive the concept of sustainable diets. This study explored perceptions of sustainable diets across five high- and middle-income countries: Japan, Indonesia, Italy, Canada, and Mexico. Semi-structured interviews were conducted with 184 young adults (30–45 per country), and transcripts were analyzed using values coding to understand the values, attitudes, and beliefs that shape behaviours related to sustainable diets. Results revealed that defining “sustainable eating” was challenging for participants across all countries. While participants’ values regarding sustainable diets were often context-specific with marked differences across countries, common themes across countries included concern about food waste and packaging and the belief that sustainability should be the responsibility of all actors across the food system, not just the individual. These findings indicate that food policy should address both individual and systemic dimensions of food sustainability, specifically prioritizing strategies for waste and packaging infrastructure. Furthermore, public health strategies must be values-oriented and culturally tailored to ensure they resonate with local consumer priorities. Full article

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18 pages, 557 KB

Open AccessArticle

Housing Retrofit at Scale: A Diffusion of Innovations Perspective for Planetary Health and Human Well-Being

by Chamara Panakaduwa, Paul Coates, Nishan Mallikarachchi, Harshi Bamunuachchige and Srimal Samansiri

Challenges 2026, 17(1), 4; https://doi.org/10.3390/challe17010004 - 16 Jan 2026

Abstract

Housing stock is observed to be associated with high carbon emissions, high fuel poverty and low comfort levels in the UK. Retrofitting the housing stock is one of the best solutions to address these problems. This paper directly corresponds with human and planetary [...] Read more.

Housing stock is observed to be associated with high carbon emissions, high fuel poverty and low comfort levels in the UK. Retrofitting the housing stock is one of the best solutions to address these problems. This paper directly corresponds with human and planetary health in terms of climate change, human health and mental health by addressing the challenges of housing retrofit at scale. Retrofitting houses can also contribute to social equity, reduced use of planetary resources and better financial and physical comfort. Despite the availability of the right technology, government grants and the potential to acquire supply chain and skilled labour, the progress of retrofit is extremely poor. Importantly, the UK is off track to achieve net zero by 2050, and the housing stock contributes 18.72% of the total emissions. The problem is further exacerbated by the 30.4 million units of housing stock. Robust strategies are required to retrofit the housing stock at scale. The study uses a qualitative modelling method under the diffusion of innovations theory to formulate a retrofit-at-scale strategy for the UK. Findings recommend focusing on skill development, show homes, research and innovation, supply chain development, business models, government grants and regulatory tools in a trajectory from 2025 to 2050. The proposed strategy is aligned with the segments of the diffusion of innovation theory. Although the analysis was performed with reference to the UK, the findings are transferable, considering the broader and urgent concerns related to human and planetary health. Full article

(This article belongs to the Section Energy Sustainability)

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28 pages, 2385 KB

Open AccessViewpoint

Conscious Food Systems: Supporting Farmers’ Well-Being and Psychological Resilience

by Julia Wright, Janus Bojesen Jensen, Charlotte Dufour, Noemi Altobelli, Dan McTiernan, Hannah Gosnell, Susan L. Prescott and Thomas Legrand

Challenges 2026, 17(1), 3; https://doi.org/10.3390/challe17010003 - 15 Jan 2026

Abstract

Amid escalating ecological degradation, social fragmentation, and rising mental health challenges—especially in rural and agricultural communities—there is an urgent need to reimagine systems that support both planetary and human flourishing. This viewpoint examines an emerging paradigm in agriculture that emphasizes the role of [...] Read more.

Amid escalating ecological degradation, social fragmentation, and rising mental health challenges—especially in rural and agricultural communities—there is an urgent need to reimagine systems that support both planetary and human flourishing. This viewpoint examines an emerging paradigm in agriculture that emphasizes the role of farmers’ inner development in fostering practices that enhance ecological health, community well-being, and a resilient food system. A key goal is to draw more academic attention to growing community calls for more holistic, relational, and spiritually grounded approaches to food systems as an important focus for ongoing research. Drawing on diverse case studies from Japan, India, and Europe, we examine how small-scale and natural farming initiatives are integrating inner development, universal human values, and ecological consciousness. These case studies were developed and/or refined through a program led by the Conscious Food Systems Alliance (CoFSA), an initiative of the United Nations Development Programme (UNDP) that seeks to integrate inner transformation with sustainable food systems change. The initiatives are intended as illustrative examples of how agriculture can transcend its conventional, anthropocentric role as a food production system to become a site for cultivating deeper self-awareness, spiritual connection, and regenerative relationships with nature. Participants in these cases reported significant shifts in mindset—from materialistic and extractive worldviews to more relational and value-driven orientations rooted in care, cooperation, and sustainability. Core practices such as mindfulness, experiential learning, and spiritual ecology helped reframe farming as a holistic process that nurtures both land and life. These exploratory case studies suggest that when farmers are supported in aligning with inner values and natural systems, they become empowered as agents of systemic change. By linking personal growth with planetary stewardship, these models offer pathways toward more integrated, life-affirming approaches to agriculture and future academic research. Full article

(This article belongs to the Special Issue Agroecology and Conscious Food Systems for Flourishing of People, Places, and Planet)

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18 pages, 1749 KB

Open AccessArticle

Forestland Resource Exploitation Challenges and Opportunities in the Campo Ma’an Landscape, Cameroon

by Raoul Ndikebeng Kometa, Cletus Fru Forba, Wanie Clarkson Mvo and Jude Ndzifon Kimengsi

Challenges 2026, 17(1), 2; https://doi.org/10.3390/challe17010002 - 31 Dec 2025

Abstract

The global literature underscores a set of human wellbeing challenges and opportunities for forestland exploitation, albeit the lack of region-specific evidence. This concerns the Congo Basin, the second-largest forest ecosystem in the world. This study uses the case of the Campo Ma’an Landscape [...] Read more.

The global literature underscores a set of human wellbeing challenges and opportunities for forestland exploitation, albeit the lack of region-specific evidence. This concerns the Congo Basin, the second-largest forest ecosystem in the world. This study uses the case of the Campo Ma’an Landscape to: (i) analyze the challenges linked to the exploitation of forestland resources, and (ii) explore forest resource exploitation opportunities in the landscape. The study employed a random sample of 200 natural resource-dependent households drawn from four study zones—Niete, Campo, Ma’an and Akom II. This was complemented by focus group discussions (n = 4), key informant (n = 6) and expert (n = 6) interviews. The descriptive and inferential analyses led to the following results: First, economic, technical, socio-cultural and institutional challenges affect the sustainable exploitation of forestland resources in the Campo Ma’an Landscape. The economic challenges of forest (B = −0.389, p = 0.01) and land resource exploitation (B = −0.423, p = 0.006) significantly affect sustainable exploitation compared to other challenges, leading to biodiversity loss and deforestation. These constitute a threat to planetary health systems. Almost all households rely on forestland resources for their livelihoods and development, with opportunities for land resource exploitation outweighing those in forest resource exploitation. Protected area management and agriculture are affected owing to competing interests among farmers, conservationists and other land users. Thus, short-term economic gains are prioritized over long-term sustainability, putting the resource landscape at risk of degradation and future uncertainties. Integrated stakeholder engagement, capacity building, and policy revision could enhance the planetary health approach by linking the social, economic and environmental dimensions of forestland resource management. Full article

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26 pages, 1828 KB

Open AccessArticle

Earth Awareness: Mapping an Emergent Relational Field

by Stephen M. Posner

Challenges 2026, 17(1), 1; https://doi.org/10.3390/challe17010001 - 22 Dec 2025

Abstract

Amidst deepening ecological disruption and widespread disconnection from nature, this study explores the emerging field of Earth Awareness (EA) as a relational and experiential aspect of advancing planetary health. EA practices—rooted in Buddhist, Indigenous, mindfulness, and nature-based traditions—support direct experiences of interconnectedness with [...] Read more.

Amidst deepening ecological disruption and widespread disconnection from nature, this study explores the emerging field of Earth Awareness (EA) as a relational and experiential aspect of advancing planetary health. EA practices—rooted in Buddhist, Indigenous, mindfulness, and nature-based traditions—support direct experiences of interconnectedness with Earth, ecological awareness and consciousness, and opportunities to transform underlying patterns and systems. Through 45 reflective dialogues with teachers and practitioners across traditions, this participatory research identifies common inspirations, intentions, and challenges that shape the emerging EA field. Findings reveal that EA is characterized by contemplative practices, rituals, and ceremonies that bridge inner transformation and outer action in the world. Central intentions such as healing, interconnectedness, and justice align closely with planetary health priorities, including mental well-being, equity, and stewardship of the living world. Although the field faces challenges related to access, risk of cultural appropriation, and systemic separation, participants identified opportunities for community building, intercultural exchange, and centering Earth as teacher and co-participant. By mapping coherence in this diverse field, this study highlights EA’s potential to contribute to planetary health by reconnecting people with place, fostering a more ecological consciousness, and supporting culturally grounded pathways for collective action and care for Earth. Full article

(This article belongs to the Special Issue Nurturing Connected Consciousness in the Anthropocene: Addressing Calls for Cultural and Spiritual Transformation as a Path to Personal, Collective, and Planetary Health)

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26 pages, 1047 KB

Open AccessViewpoint

Artificial General Intelligence and Planetary Justice: A Framework for Safe and Just Transitions

by Pascal Stiefenhofer and Cafer Deniz

Challenges 2025, 16(4), 59; https://doi.org/10.3390/challe16040059 - 8 Dec 2025

Abstract

Artificial General Intelligence (AGI) is emerging not only as a technological breakthrough but as a defining challenge for planetary health and global governance. Its potential to accelerate discovery, optimise resource use, and improve health systems is counterbalanced by risks of inequality, domination, and [...] Read more.

Artificial General Intelligence (AGI) is emerging not only as a technological breakthrough but as a defining challenge for planetary health and global governance. Its potential to accelerate discovery, optimise resource use, and improve health systems is counterbalanced by risks of inequality, domination, and ecological overshoot. This paper introduces a Justice-First Pluralist Framework that embeds fairness, capability expansion, relational equality, procedural legitimacy, and ecological sustainability as constitutive conditions for governing intelligent systems. The framework is realised through a stylised, simulation-based study designed to demonstrate the possibility of formally analysing justice-relevant paradoxes rather than to produce empirically validated results. Three structural paradoxes are examined: (i) efficiency gains that accelerate ecological degradation, (ii) local fairness that externalises global harm, and (iii) coordination that reinforces concentration of power. Monte Carlo ensembles comprising thousands of stochastic runs indicate that justice-compatible trajectories are statistically rare, showing that ethical and sustainable AGI outcomes do not arise spontaneously. The study is conceptual and diagnostic in nature, illustrating how justice can be treated as a feasibility boundary—integrating social equity, ecological limits, and procedural legitimacy—rather than as an after-the-fact correction. Aligning AGI with planetary stewardship therefore requires anticipatory governance, transparent design, and institutional calibration to the safe and just operating space for humanity. Full article

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20 pages, 880 KB

Open AccessArticle

Planet B: A Systems Engineering Framework for World Peace and Planetary Health

by Sailesh Krishna Rao and Gerard Wedderburn-Bisshop

Challenges 2025, 16(4), 58; https://doi.org/10.3390/challe16040058 - 8 Dec 2025

Abstract

Planetary boundary transgressions occur as the result of a conflict between human-engineered systems and the natural life-support systems on Earth. In this paper, we validate the Berkana Institute’s Two Loops Theory of Change which posits that big living systems cannot be changed from [...] Read more.

Planetary boundary transgressions occur as the result of a conflict between human-engineered systems and the natural life-support systems on Earth. In this paper, we validate the Berkana Institute’s Two Loops Theory of Change which posits that big living systems cannot be changed from within. We can only abandon them and start over. We show that the desired objectives of world peace and planetary health can be attained through a “Planet B” style engineering of human systems to meet the 17 UN Sustainable Development Goals (SDG), sans SDG #8 (Economic Growth) and with the addition of Beyond Cruelty Foundation’s SDG #18 (Zero Animal Exploitation). We show that the transition to fully plant-based systems as envisioned in SDG #18 mitigates all seven planetary boundary transgressions and aids in the development of a regenerative, equitable, and sustainable civilization that we call Planet B. Full article

(This article belongs to the Special Issue Planetary Health: Urgency and Agency for Systems Change. Including Submissions Associated with the 2025 Planetary Health Annual Meeting (PHAM2025))

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32 pages, 3142 KB

Open AccessReview

The Planetary Health Impacts of Coffee Farming Systems in Latin America: A Review

by Emiliano Hersch-González and Horacio Riojas-Rodríguez

Challenges 2025, 16(4), 57; https://doi.org/10.3390/challe16040057 - 20 Nov 2025

Abstract

In Latin America, coffee is cultivated in distinct coffee agroecosystems (CASs), ranging from traditional agroforestry (“shade”) systems (CAFSs) to intensive, unshaded (“sun”) monocultures (UCASs). While various socioenvironmental impacts of these systems have been studied, their implications have not yet been integrated within a [...] Read more.

In Latin America, coffee is cultivated in distinct coffee agroecosystems (CASs), ranging from traditional agroforestry (“shade”) systems (CAFSs) to intensive, unshaded (“sun”) monocultures (UCASs). While various socioenvironmental impacts of these systems have been studied, their implications have not yet been integrated within a planetary health perspective. This review of 146 studies applies the Planetary Boundaries and Nature’s Contributions to People frameworks and the DPSEEA (Drivers, Pressures, State, Exposure, Effects, Actions) model to map the relationships between socioenvironmental drivers of change, different CASs, the state of natural systems at local and global scales, and human health and well-being. The analysis shows that conventional intensification, driven by low revenues for producers, climate change, and disease outbreaks, has accelerated deforestation, biodiversity loss, greenhouse gas emissions, agrochemical use and leakage, and water pressures. These changes create health risks for coffee-growing communities, such as pesticide exposure and increased vulnerability to external shocks. Conversely, agroecological practices can mitigate environmental pressures while reducing exposure to health hazards and improving resilience, food security, and income stability. However, mainstreaming these practices requires addressing structural inequities in the global coffee value chain to ensure fairer revenue distribution, stronger institutional support, and the protection of coffee-growing communities. Full article

(This article belongs to the Special Issue Planetary Health: Urgency and Agency for Systems Change. Including Submissions Associated with the 2025 Planetary Health Annual Meeting (PHAM2025))

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16 pages, 277 KB

Open AccessArticle

Development and Preliminary Validation of the Planetary Empathy Scale: An International Study

by Tracy Levett-Jones, Katie J. Tunks Leach, Heidi Honegger Rogers, Catelyn Richards, Aletha Ward and Samuel Lapkin

Challenges 2025, 16(4), 56; https://doi.org/10.3390/challe16040056 - 17 Nov 2025

Abstract

(1) Background: Planetary empathy includes deep reflection on one’s relationship with nature, curiosity about other worldviews, and an assumption of responsibility for creating a healthier and more equitable world for current and future generations. (2) Purpose: This paper presents a study that aimed [...] Read more.

(1) Background: Planetary empathy includes deep reflection on one’s relationship with nature, curiosity about other worldviews, and an assumption of responsibility for creating a healthier and more equitable world for current and future generations. (2) Purpose: This paper presents a study that aimed to develop and conduct preliminary validation of the Planetary Empathy Scale for healthcare professionals. (3) Methods: The Planetary Empathy Scale was developed based on a concept analysis and preliminary validation was conducted in accordance with COSMIN guidelines. Data from 231 healthcare students and professionals informed item analysis. Cronbach’s alpha, known-groups comparisons, and exploratory factor analysis were used to assess reliability and validity. (4) Results: Initial psychometric testing supported a six-factor structure representing distinct yet interrelated dimensions of planetary empathy. The Scale demonstrated adequate structural validity, internal consistency, and construct validity. (5) Conclusions: The Planetary Empathy Scale proved to be a valid and reliable instrument. Participants had generally high levels of planetary empathy. Further psychometric testing with diverse cohorts is recommended. Full article

(This article belongs to the Special Issue Nurturing Connected Consciousness in the Anthropocene: Addressing Calls for Cultural and Spiritual Transformation as a Path to Personal, Collective, and Planetary Health)

20 pages, 648 KB

Open AccessArticle

From Knowledge to Action in Tackling Energy Poverty: The Role of European Postgraduate Programs in Energy Equity

by Christiana Papapostolou, Kosmas Kavadias, Stefanos Tzelepis, Gilles Notton, Marie-Laure Nivet, Jean-Laurent Duchaud and Ghjuvan Antone Faggianelli

Challenges 2025, 16(4), 55; https://doi.org/10.3390/challe16040055 - 12 Nov 2025

Abstract

Education can play a pivotal role in the eradication of energy poverty by facilitating the transfer of knowledge and skills to all interested stakeholders whilst also promoting the adoption of sustainable energy solutions. In the context of this paper, a comprehensive review of [...] Read more.

Education can play a pivotal role in the eradication of energy poverty by facilitating the transfer of knowledge and skills to all interested stakeholders whilst also promoting the adoption of sustainable energy solutions. In the context of this paper, a comprehensive review of European master’s programs related to energy poverty is carried out, resulting in the identification of approximately of 100 programs across seven European countries that either explicitly or implicitly address the topic. In most cases, energy poverty is embedded in a broader academic discipline—such as energy systems, renewable energy, or sustainable development—rather than being treated as a standalone field. In Europe, the United Kingdom, France, Greece, and Romania were singled out as the leading contributors to energy poverty education. Within the framework of the EU-funded project “MSc in Energy Poverty Alleviation Technologies”, implemented in collaboration with South African universities, this study focuses on South Africa, which represents a characteristic example of a country facing high levels of energy poverty and significant inequalities in energy access. This work highlights the critical need for targeted academic curricula specifically designed to bridge the persistent gap between academic research and its real-world applications, particularly in regions of the world where such integration is most urgent. It also emphasizes the essential role of linking STEM education with the social and humanitarian sciences. Finally, this work underscores the need for interdisciplinary approaches that connect energy poverty alleviation and education by additionally expanding the research and documentation of relevant good initiatives from Asia (China). Full article

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27 pages, 609 KB

Open AccessViewpoint

Reflecting on Social Inclusion Through Philosophical Discussion: A Sustainable Partnership Framework

by Peter R. J. Trim and Richard C. L. Trim

Challenges 2025, 16(4), 54; https://doi.org/10.3390/challe16040054 - 5 Nov 2025

Abstract

The 17 sustainable development goals advocated by the United Nations have played a big role in focusing the minds of policy makers in terms of sustainability issues and have also highlighted the issue of social inclusion and the need to make society more [...] Read more.

The 17 sustainable development goals advocated by the United Nations have played a big role in focusing the minds of policy makers in terms of sustainability issues and have also highlighted the issue of social inclusion and the need to make society more equitable. As well as referencing the sustainable development goals, attention is given to the planetary health concept as it is known to deepen our understanding of the ecological interdependence brought about by cultural, environmental and socio-economic factors, which have relevance in terms of mankind achieving the sustainable development goals. This paper addresses the following question: How can a framework to foster global partnerships leading to sustainable development be underpinned by a philosophical argument that strengthens the case for social inclusion? Consequently, a wide body of literature is reviewed, with key concepts such as collaboration being placed in context and reinforced through stakeholder theory. A philosophical discussion is entered into embracing Moore’s open question argument regarding the reliance on Intuitionism to explain how actions can be coined as immoral or moral. Such arguments are useful for raising moral issues that often end in moral disagreements, and which raise and help solve ethical problems. To effectively deal with the complexity involved, policy makers should support the use of frameworks that can be used to support and encourage social inclusion. In adopting this viewpoint, we put forward a sustainable partnership framework that provides guidance to policy makers and their advisors in terms of tackling the issue of social inclusion. In order to achieve social inclusion, policy makers need to understand the role that symbolic representation plays and how the influence of major influencers generates collaborative knowledge that is reappraised through philosophical argument. The outcome of the philosophical argument is a change in a nation’s cultural value system and the implementation of social inclusion policy. Full article

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15 pages, 2332 KB

Open AccessProject Report

What Shall We Cook Tomorrow? Empowering Students Through Sustainable Food Education and Novel Protein Exploration

by Alessandra Norici, Cristina Truzzi, Caterina Gerotto, Anna Annibaldi, Silvia Illuminati, Alessandra Petrucciani, Lorenzo Mollo, Graziana Spinelli, Miles Minio, Lorenzo Massi, Federico Girolametti, Behixhe Ajdini, Matteo Fanelli, Irene Biancarosa, Giuseppe Dipietro, Matteo Palmucci and Rosa Martino

Challenges 2025, 16(4), 53; https://doi.org/10.3390/challe16040053 - 4 Nov 2025

Abstract

This report presents the activities and outcomes of an educational project aimed at promoting sustainable food awareness among high-school students in Italy through the active contributions from young researchers, profit partners and school educators. The project involved two final-year classes—one from a scientific [...] Read more.

This report presents the activities and outcomes of an educational project aimed at promoting sustainable food awareness among high-school students in Italy through the active contributions from young researchers, profit partners and school educators. The project involved two final-year classes—one from a scientific lyceum and one from a technical chemistry institute—and integrated theoretical lessons, laboratory activities, and experiential learning focused on planetary boundaries, sustainable diets, and alternative proteins such as from algae and insects. To assess the impact of the project, pre- and post-intervention questionnaires were administered and are here discussed. The intervention significantly enhanced the students’ cognitive and affective engagement both during the sessions and in the immediate aftermath, as evidenced by elevated levels of satisfaction and retention of key concepts. Overall, the project fostered great environmental awareness and openness to sustainable food choices, demonstrating the potential of targeted hands-on educational programs to influence both attitudes and behaviours in younger generations of western high-income countries. The project serves as a replicable model of a transdisciplinary approach for integrating Education for Sustainable Development (ESD) and education for Planetary Health into secondary school curricula. Full article

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24 pages, 3754 KB

Open AccessArticle

Air Quality Monitoring in Two South African Townships: Modelling Spatial and Temporal Trends in O₃ and CO Hotspots

by Aluwani Innocent Muneri, Benett Siyabonga Madonsela and Thabang Maphanga

Challenges 2025, 16(4), 52; https://doi.org/10.3390/challe16040052 - 31 Oct 2025

Cited by 1

Abstract

Air quality is a key priority in environmental policy agendas worldwide, yet rapid urban growth in developing countries disproportionately affects urban air quality. In sub-Saharan Africa, the spatial and temporal dynamics of key pollutants remain underexplored. This knowledge gap limits the ability to [...] Read more.

Air quality is a key priority in environmental policy agendas worldwide, yet rapid urban growth in developing countries disproportionately affects urban air quality. In sub-Saharan Africa, the spatial and temporal dynamics of key pollutants remain underexplored. This knowledge gap limits the ability to understand how pollution hotspots emerge, how they shift over time, and how they interact with the broader planetary processes such as climate change. This study analysed the spatial distribution of ozone (O₃) and carbon monoxide (CO) hotspots in Diepkloof and Klieprivier townships, Johannesburg, South Africa, using data from 2019 to 2023 obtained from air quality monitoring stations. Spatial patterns were mapped using Inverse Distance Weighting (IDW) interpolation in a Geographic Information System (GIS), and meteorological influences were assessed through multiple linear regression. Results showed distinct spatial trends: Diepkloof experienced a decrease in O₃ from 23 ppb to 16 ppb, whereas Klieprivier remained stable but exhibited marked seasonal variation, peaking at 30 ppb in spring. Wind speed, wind direction, and humidity were significant predictors (p < 0.05) of both CO and O₃. In Klieprivier, meteorological factors explained 54.2% of O₃ variability, with temperature being the strongest predictor. These findings provide valuable insight into pollutant behaviour in urban townships and highlight the importance of integrating spatial analysis with meteorological modelling for targeted air quality management. Full article

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17 pages, 485 KB

Open AccessArticle

The United Nations Sustainable Development Goals 2030 Vision: Backsliding, Illiberalism, and the Unlikelihood of the Agenda’s Success

by Nadini Persaud and Ruby Dagher

Challenges 2025, 16(4), 51; https://doi.org/10.3390/challe16040051 - 28 Oct 2025

Abstract

The United Nations 2030 Sustainable Development Goals (SDGs) Agenda has been derailed by various events (e.g., COVID-19, economic crises, democratic backsliding, economic illiberalism, decreasing regard for human rights, and war). These events have diverted attention from the Agenda, and consumed precious limited financial [...] Read more.

The United Nations 2030 Sustainable Development Goals (SDGs) Agenda has been derailed by various events (e.g., COVID-19, economic crises, democratic backsliding, economic illiberalism, decreasing regard for human rights, and war). These events have diverted attention from the Agenda, and consumed precious limited financial resources that could be used to advance the SDGs. With only five years remaining, this initiative is at serious risk of not achieving its desired objectives and impact. Internal contradictions between the goals, challenges to the funding mechanism, and power imbalances within a country, regionally, and globally need to be addressed. This paper will examine the myriad challenges that countries face in trying to implement the Agenda post COVID-19, including those linked to the actions of developed countries, and explore how important changes to the Agenda could be undertaken all while helping to protect a country’s own policy space. Full article

30 pages, 3449 KB

Open AccessReview

Mapping the Trajectory of Planetary Health Education—A Critical and Constructive Perspective from the Global South

by Isaías Lescher Soto, Bernabé Vidal, Lorenzo Verger and Gustavo J. Nagy

Challenges 2025, 16(4), 50; https://doi.org/10.3390/challe16040050 - 21 Oct 2025

Abstract

The planetary health approach has gained traction in academic and international governance spheres; however, its limited integration into education systems has hindered its emergence as a universal framework for addressing the triple planetary crisis (climate change, biodiversity loss, and pollution) and its impacts [...] Read more.

The planetary health approach has gained traction in academic and international governance spheres; however, its limited integration into education systems has hindered its emergence as a universal framework for addressing the triple planetary crisis (climate change, biodiversity loss, and pollution) and its impacts on individual well-being and global health systems. We mapped the evolution of the educational approach to planetary health between 2015 and 2025 from a critical and constructive perspective, using a bibliometric and thematic analysis. Through the bibliometric analysis, we found that publications from the Global North predominate, focusing on health programmes and topics such as climate change, One Health, Global Health and Public Health. The thematic analysis, based on inductive categorisation, allowed us to identify criticisms of the educational approach, such as its curricular marginalisation and limited scalability. From an epistemological perspective, these criticisms refer to technoscientific reductionism, the invisibility of non-Western epistemologies and the decoupling of cognition and environment. Given these limitations, we propose a reconstruction of the planetary health approach along three critical dimensions: Motivation, Legitimacy and Epistemology. This reconstruction is projected into short-, medium- and long-term scenarios at the university level, particularly as part of curriculum reform efforts, to broaden the pedagogical impact and promote a more inclusive and transformative vision. Full article

(This article belongs to the Section Planetary Health Education and Communication)

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25 pages, 309 KB

Open AccessCase Report

Solastalgia Following Environmental Change in Gold Mining Areas of Zimbabwe: A Case Study of Lived Experiences

by Moses Nyakuwanika

Challenges 2025, 16(4), 49; https://doi.org/10.3390/challe16040049 - 20 Oct 2025

Abstract

This case study examines the experience of solastalgia among individuals residing in gold mining towns in Zimbabwe, particularly as environmental degradation intensified, to illustrate the experience of solastalgia through the expressions and reflections of individuals who have been impacted by it. Ecological degradation [...] Read more.

This case study examines the experience of solastalgia among individuals residing in gold mining towns in Zimbabwe, particularly as environmental degradation intensified, to illustrate the experience of solastalgia through the expressions and reflections of individuals who have been impacted by it. Ecological degradation has intensified, and national forest cover has been declining at an average rate of 327,000 hectares per year between 2000 and 2010. Meanwhile, artisanal gold mining releases more than 24 tons of mercury into ecosystems annually, contaminating water bodies. The research employed a qualitative design grounded in the interpretivist paradigm and utilized an inductive methodology. Data were obtained through in-depth interviews with 11 individuals who had resided in areas impacted by mining for an extended period. Thematic analysis was employed to examine individuals’ emotions, thoughts, and behaviours in response to environmental changes, with an emphasis on feelings of loss, sadness, frustration, and disconnection from place. Participants exhibited intense emotional reactions to environmental changes, including profound sadness, anger, feelings of helplessness, and a longing for the past. Of the participants, 70% reported experiencing profound sorrow, while 60% indicated that they employed community support as a coping strategy. The degradation of forests, water sources, and biodiversity contributed to a sense of alienation regarding their environment and identity. Nevertheless, some demonstrated resilience through their faith, community support, and efforts to safeguard the environment. However, their ability to heal and adapt was hindered by persistent systematic neglect and unfulfilled commitments. This case study contributes to the growing literature on solastalgia by presenting specific instances from Zimbabwe, a region where the phenomenon remains inadequately comprehended. This expands the concept of solastalgia to encompass the ecological degradation resulting from mining activities in Africa. Full article

(This article belongs to the Special Issue Climate Change and Migration: Navigating Intersecting Crises)

14 pages, 3444 KB

Open AccessArticle

Relational Infrastructures for Planetary Health: Network Governance and Inner Development in Brazil’s Traceable Beef Export System

by Ivan Bergier

Challenges 2025, 16(4), 48; https://doi.org/10.3390/challe16040048 - 16 Oct 2025

Abstract

This study analyzes the relational architecture of Brazilian traceable beef exports using a tripartite network model that connects certified meatpacking plants, AgriTrace sustainability protocols, and importing countries. By leveraging export authorization data from the Brazilian Ministry of Agriculture, it is shown that certification [...] Read more.

This study analyzes the relational architecture of Brazilian traceable beef exports using a tripartite network model that connects certified meatpacking plants, AgriTrace sustainability protocols, and importing countries. By leveraging export authorization data from the Brazilian Ministry of Agriculture, it is shown that certification protocols function not merely as compliance tools but as relational governance infrastructures, mediating legitimacy, market access, and coordination within global value chains. Bipartite projections allowed the deriving and analyzing of two secondary networks: one mapping connections between meatpacking plants that share certifications, and the other linking consumer nations through common supply channels. The meatpacking plant network displays high modularity, featuring two dominant clusters alongside several smaller, regionally coherent clusters. This structure reflects diverse governance capabilities and strategic certification adoptions. Conversely, the consumer nation network shows lower modularity but identifies central hubs that organize international demand and signal regulatory alignment. These patterns reveal underlying dynamics of coopetition, where actors collaborate through shared standards yet compete through innovation. By integrating the Inner Development Goals (IDG) framework, it is revealed internal capacities, such as trust, complexity awareness, and shared purpose, underpinning the efficacy of traceability systems as ethical and adaptive infrastructures. This values-based lens provides a novel perspective on how technical systems can foster resilient, inclusive, and sustainable trade, thereby contributing to planetary health and human-centered development in global livestock governance. Full article

(This article belongs to the Section Food Solutions for Health and Sustainability)

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