Nature-based solutions (NBS) and circular design are transforming how we address climate change, ecosystem degradation, and urban resilience . This book explores how integrating circular economy principles with nature-based systems can regenerate ecosystems, reduce carbon emissions, and create sustainable, adaptive infrastructure. Designed for professionals in urban planning, climate policy, sustainability, environmental consulting, and green infrastructure , this book offers practical insights into: How nature-based solutions support climate adaptation and mitigation How circular design improves resource efficiency and waste reduction How to scale and finance circular NBS in cities and landscapes How governance, policy, and finance can align for regenerative systems Structured without case studies for broader applicability, this guide combines climate resilience , biodiversity protection , and circular economy strategies to help readers implement high-impact, multifunctional solutions. Whether you're designing green infrastructure, writing sustainability plans, or leading policy change, this resource equips you with the tools, frameworks, and terminology needed to advance nature-based and circular solutions in a changing world.