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Non-technical summary: We identify a set of essential recent advances in climate change research with high policy relevance, across natural and social sciences: (1) looming inevitability and implications of overshooting the 1.5°C warming limit, (2) urgent need for a rapid and managed fossil fuel phase-out, (3) challenges for scaling carbon dioxide removal, (4) uncertainties regarding the future contribution of natural carbon sinks, (5) intertwinedness of the crises of biodiversity loss and climate change, (6) compound events, (7) mountain glacier loss, (8) human immobility in the face of climate risks, (9) adaptation justice, and (10) just transitions in food systems. Technical summary The IPCC Assessment Reports offer the scientific foundation for international climate negotiations and constitute an unmatched resource for climate change researchers. However, the assessment cycles take multiple years. As a contribution to cross- and interdisciplinary understanding across diverse climate change research communities, we have streamlined an annual process to identify and synthesise essential research advances. We collected input from experts on different fields using an online questionnaire and prioritised a set of ten key research insights with high policy relevance. This year we focus on: (1) looming overshoot of the 1.5°C warming limit, (2) urgency of phasing-out fossil fuels, (3) challenges for scaling carbon dioxide removal, (4) uncertainties regarding the future of natural carbon sinks, (5) need for join governance of biodiversity loss and climate change, (6) advances in the science of compound events, (7) mountain glacier loss, (8) human immobility in the face of climate risks, (9) adaptation justice, and (10) just transitions in food systems. We first present a succinct account of these Insights, reflect on their policy implications, and offer an integrated set of policy relevant messages. This science synthesis and science communication effort is also the basis for a report targeted to policymakers as a contribution to elevate climate science every year, in time for the UNFCCC COP. Social media summary We highlight recent and policy-relevant advances in climate change research - with input from more than 200 experts 1.

Complexity and uncertainty are long-standing challenges for global development projects. Coping with both requires flexibility and adaptation, the ability to identify unexpected circumstances, seize opportunities, and respond to threats. Vigilance is critical; it resides within the domains of monitoring, evaluation, and learning. In practice, maintaining vigilance is difficult, partly because effective vigilance has a dual nature. Normal, Type 1 vigilance, is anchored in knowing what to look for. It demands focus and attention to designated indicators. Type 2 vigilance looks for what project preparations failed to anticipate. It demands defocusing and openness; it sits outside contemporary design of monitoring and evaluation as it must question the assumptions in project design and implementation. We consider the role of both types of vigilance in global development and difficulties in maintaining both simultaneously. We identify pathways for improving the practice of vigilance and suggest practical steps in a template for pilot efforts.

Non-technical summary We summarize what we assess as the past year's most important findings within climate change research: limits to adaptation, vulnerability hotspots, new threats coming from the climate-health nexus, climate (im)mobility and security, sustainable practices for land use and finance, losses and damages, inclusive societal climate decisions and ways to overcome structural barriers to accelerate mitigation and limit global warming to below 2°C. Technical summary We synthesize 10 topics within climate research where there have been significant advances or emerging scientific consensus since January 2021. The selection of these insights was based on input from an international open call with broad disciplinary scope. Findings concern: (1) new aspects of soft and hard limits to adaptation; (2) the emergence of regional vulnerability hotspots from climate impacts and human vulnerability; (3) new threats on the climate-health horizon - some involving plants and animals; (4) climate (im)mobility and the need for anticipatory action; (5) security and climate; (6) sustainable land management as a prerequisite to land-based solutions; (7) sustainable finance practices in the private sector and the need for political guidance; (8) the urgent planetary imperative for addressing losses and damages; (9) inclusive societal choices for climate-resilient development and (10) how to overcome barriers to accelerate mitigation and limit global warming to below 2°C. Social media summary Science has evidence on barriers to mitigation and how to overcome them to avoid limits to adaptation across multiple fields.

Complexity and uncertainty are long-standing challenges for global development projects. Coping with both requires flexibility and adaptation, the ability to identify unexpected circumstances, seize opportunities, and respond to threats. Vigilance is critical; it resides within the domains of monitoring, evaluation, and learning. In practice, maintaining vigilance is difficult, partly because effective vigilance has a dual nature. Normal, Type 1 vigilance, is anchored in knowing what to look for. It demands focus and attention to designated indicators. Type 2 vigilance looks for what project preparations failed to anticipate. It demands defocusing and openness; it sits outside contemporary design of monitoring and evaluation as it must question the assumptions in project design and implementation. We consider the role of both types of vigilance in global development and difficulties in maintaining both simultaneously. We identify pathways for improving the practice of vigilance and suggest practical steps in a template for pilot efforts. [ABSTRACT FROM AUTHOR]