Ushering Circular Economy Principles to Mitigate Environmental Hazards and Support Sustainable Development Goals Progress in an Urban Environment

Urban areas are becoming more susceptible to complex environmental hazards, air pollution, heat waves, flooding, and waste upsurge, aggravated by climate change, overpopulation, excess resource consumption, and rapid urbanization. This study aims to analyze how Circular Economy (CE) practices can be leveraged as adaptive strategies to mitigate ecological damage while Accomplishing Sustainable Development Goals (SDGs). A multi-case study approach is embraced to examine the breadth to which CE initiatives accepted in Karachi, such as circular construction, resource-from-waste systems, and renewable energy initiatives, are engaged in reducing ecological hazards and supporting progress toward SDGs. In this regard, the paper designs a conceptual framework coupling CE interventions with environmental risks and SDGs. Tangible findings signify integral factors to construct CE are waste recycling, eco-friendly resources and products, and collaborations, whereas persistent barriers are governance, policy, technology, costs, and consumer behaviors. The study proffers actionable insights for researchers, industrialists, and urban policymakers to scale CE practices as a strategic pathway for climate-adaptive and sustainable urban futures, attempting to save society, the economy, and the environment.