The Unpacked Guide, "Sphere Unpacked Guide: Nature-based Solutions for Climate Resilience in Humanitarian Action," provides a comprehensive overview of nature-based solutions (NbS) for climate resilience in humanitarian action. The guide was developed with input from a range of experts and acknowledges the contributions of various organizations and individuals. NbS are approaches that use natural systems to address environmental and social challenges, and can be used in humanitarian contexts to improve resilience to climate change and other disasters. The guide covers a range of topics, including the benefits and challenges of NbS, case studies of their use in humanitarian contexts, and recommendations for how to integrate NbS into humanitarian programming. Overall, the guide provides valuable insights and guidance for those working in the humanitarian sector to better incorporate nature-based solutions into their work.