Transitions towards sustainability are urgently needed to address the interconnected challenges of economic development, ecological integrity, and social justice, from local to global scales. Around the world, collaborative science-society initiatives are forming to conduct experiments in support of sustainability transitions. Such experiments, if carefully designed, provide significant learning opportunities for making progress on transition efforts. Yet, there is no broadly applicable evaluative scheme available to capture this critical information across a large number of cases, and to guide the design of transition experiments. To address this gap, the article develops such a scheme, in a tentative form, drawing on evaluative research and sustainability transitions scholarship, alongside insights from empirical cases. We critically discuss the scheme's key features of being generic, comprehensive, operational, and formative. Furthermore, we invite scholars and practitioners to apply, reflect and further develop the proposed tentative scheme -making evaluation and experiments objects of learning.

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In recent decades, transdisciplinary research has been increasingly recognised as necessary to produce solutions for sustainable development; however, implementation challenges remain. The emerging field of planetary health offers a unique lens to guide a new synthesis of perspectives, recognising interlinkages between environmental and human health, and interdependence across global development contexts, that is, at the environment‐health‐development nexus. This broad, practice‐based literature review consolidates learnings from previous transdisciplinary research across these diverse yet interrelated fields, and aims to deepen understanding of, and identify opportunities for, enabling collaborative practice. This review found structural, relational, and individual factors enabling and constraining collaboration. Local research contexts and academia's disciplinary traditions posed structural constraints that required relational efforts at the project, organisational and individual levels to address. This analysis revealed strategic opportunities for funding programs and researcher training that can be leveraged to increase capacity for relational work, further enabling collaboration in transdisciplinary research.