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Challenges

Challenges — Journal of Planetary Health is a transdisciplinary, peer-reviewed, open access journal focused on planetary health and the interconnected Grand Challenges affecting human wellbeing and flourishing of all life on Earth.
Published quarterly online by MDPI, it accelerates cross-sectoral solutions for sustainable, just, and regenerative futures by integrating insights from the natural, social and health sciences, and the humanities. The journal welcomes contributions that address the social, economic, political, and spiritual dimensions of global challenges, as well as biophysical threats to planetary boundaries. The Nova Network is affiliated with Challenges — Journal of Planetary Health, and the journal supports the global agenda of the Planetary Health Alliance (PHA).

All Articles (524)

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

  • Raoul Ndikebeng Kometa,
  • Cletus Fru Forba and
  • Wanie Clarkson Mvo
  • + 1 author

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.

31 December 2025

(a) shows the distribution of protected areas in Cameroon. (b) shows the location of the Campo Ma’an National Park including the villages in and around the landscape. Source: [25,26].

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.

22 December 2025

Stars indicate locations of participants who participated in dialogues for this study. The author engaged in dialogues from Vermont and Maryland in the U.S. between May–October 2024.

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.

8 December 2025

Conceptual illustration of the three paradoxes of AGI integration under justice-first conditions. (a) Efficiency–Sustainability: productivity improvements expand total ecological pressure when scale effects dominate. (b) Local Justice–Global Externality: fairness improves locally while global burdens intensify through externalisation. (c) Coordination–Concentration: centralisation enhances coordination but erodes legitimacy and equality. Together these panels depict how justice, governance, and ecology interact to shape planetary outcomes.

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.

8 December 2025

Planet B system design flow (Planet B is the world of Planet A turned upside down). Elements primarily concerned with the analysis of legacy system intractability are colored in red and those primarily concerned with the synthesis of a new sustainable system are colored in blue. The arrows indicate the dependencies of the analysis/synthesis steps during the system design flow.

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Challenges - ISSN 2078-1547