Pluralism drawing on core social scientific concepts would facilitate integrated sustainability research.

It is urgent in science and society to address climate change and other sustainability challenges such as biodiversity loss, deforestation, depletion of marine fish stocks, global ill-health, land degradation, land use change and water scarcity. Sustainability science (SS) is an attempt to bridge the natural and social sciences for seeking creative solutions to these complex challenges. In this article, we propose a research agenda that advances the methodological and theoretical understanding of what SS can be, how it can be pursued and what it can contribute. The key focus is on knowledge structuring. For that purpose, we designed a generic research platform organised as a three-dimensional matrix comprising three components: core themes (scientific understanding, sustainability goals, sustainability pathways); cross-cutting critical and problem-solving approaches; and any combination of the sustainability challenges above. As an example, we insert four sustainability challenges into the matrix (biodiversity loss, climate change, land use changes, water scarcity). Based on the matrix with the four challenges, we discuss three issues for advancing theory and methodology in SS: how new synergies across natural and social sciences can be created; how integrated theories for understanding and responding to complex sustainability issues can be developed; and how theories and concepts in economics, gender studies, geography, political science and sociology can be applied in SS. The generic research platform serves to structure and create new knowledge in SS and is a tool for exploring any set of sustainability challenges. The combined critical and problem-solving approach is essential.

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People, places, and production contributing the least to climate change will suffer the most. This calls for adaptation as a key climate change response. But adaptation is surrounded by problems. Finance is uncertain and fragmented, mainstreaming into development is complicated, and technical solutions often overshadow existing social relations and institutions. From a gender perspective, and as a critical research initiative to support the building of sustainability science as an umbrella field, this article raises three pertinent questions on adaptation in the global South: what is its purpose, how can development inform it, and what institutions in terms of rights and responsibilities are core to it? Focusing on sub-Saharan small-scale agriculture, three main points emerge. Regarding the purpose, adaptation should be a transformative pathway out of poverty, ill-health, and food insecurity. Regarding development, adaptation can learn from how development theory, policy, and practice have addressed women, gender, and environment in varied settings and debates. Regarding core institutions, adaptation must address gender regimes that regulate access to, use of, and control over resources, especially those defining land distribution, labour division, and strategic decision-making power. To conclude, I propose gender-informed research questions for further inquiry.

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