Aims: The Solutions is a journal that establishes a new benchmark for solution‑driven science and technology by showcasing effective, evidence‑based responses to global challenges. The journal aims to shorten the pathway from scientific discovery to real‑world implementation, thereby accelerating progress toward the United Nations Sustainable Development Goals (SDGs). Moving beyond traditional disciplinary boundaries, it promotes transdisciplinary systems thinking that critically examines the dynamic interconnections among ecological, social, and economic dimensions. By uniquely integrating cutting‑edge research on water security, ecological resilience, socio‑economic sustainability, and governance innovation, the journal provides actionable frameworks for systemic change. Serving as a vital interface between science, engineering, policy, and practice, The Solutions features rigorously vetted work that is both scientifically rigorous and ready for implementation.

Scope: The Solutions publishes high‑impact, solution‑oriented research that addresses global sustainability challenges through transdisciplinary advances in science, engineering, and technology. We highlight actionable innovations spanning water and environmental solutions, climate change mitigation and adaptation, ecological restoration and biodiversity conservation, sustainable systems integration and wellbeing.

Water, Environment & Resource Systems

• Integrated water resource management and water security solutions
• Nature-based solutions for flood, drought, and coastal risk reduction
• Water–energy–food nexus innovations
• Three-dimensional water scarcity assessment
• Urban water resilience and sanitation systems
• Sustainable groundwater governance and monitoring technologies

Climate Change Mitigation, Adaptation & Resilience

• Scalable climate mitigation technologies and systems
• Adaptation strategies for vulnerable communities and regions
• Climate-resilient infrastructure and urban systems
• Climate risk assessment, early warning systems, and decision tools
• Loss and damage responses grounded in practical implementation

Ecological Restoration & Biodiversity

• Restoration ecology with demonstrated ecological and social outcomes
• Biodiversity conservation strategies aligned with human wellbeing
• Ecosystem services and natural capital solutions
• Stepwise ecological restoration of watershed
• Landscape- and seascape-scale conservation planning
• Indigenous and community-led conservation models

Sustainable Cities & Built Environments

• Sustainable urban systems and infrastructure design
• Circular economy applications in cities and regions
• Green buildings, transport, and energy integration
• Urban governance innovations for sustainability transitions
• Smart cities for environmental and social outcomes

Socio-Economic Sustainability & Integrated Systems

• Systems modelling for sustainability decision-making
• Integrated assessment frameworks linking environment, economy, and society
• Governance mechanisms enabling sustainability transitions
• Institutional reforms aligned with the SDGs
• Just transitions in energy, food, and economic systems
• Monitoring, evaluation, and learning for complex systems

Technology, Methodology & Implementation Science

• Digital tools for sustainability planning and monitoring
• AI, remote sensing, and data platforms for environmental management
• Decision-support systems for policy and investment
• Open science and reproducible solutions research
• Lessons from scaling successful sustainability interventions
• Action research and implementation science

Solution-Oriented Transdisciplinary Science

• Participatory and deliberative governance models
• Metrics, incentives, and accountability for implementation
• Transferability and adaptation across regions and contexts
• Finance, investment, and business models for sustainability solutions
• Transdisciplinary and co-production methodologies
• Comparative analyses of solution effectiveness

Editorial Board