Stabilized soils and geomaterials underpin much of the world's transportation, hydraulic, waste-containment, and building infrastructure. Chemical, biological, and mechanical stabilization - using cement, lime, alkali-activated and geopolymer binders, biopolymers, microbially induced carbonate precipitation, geosynthetic inclusions - is applied routinely to improve weak, expansive, or contaminated ground and to convert waste streams into engineered fills. Yet specification and acceptance criteria still rest largely on short-term strength measured on specimens cured under controlled laboratory conditions. In service, performance is governed by long-term exposure to repeated wetting and drying, freeze-thaw, drought and desiccation cracking, fluctuating groundwater and salinity, sulphate, chloride and acid attack, carbonation, leaching, and elevated temperature. Climate change is intensifying these actions and expanding their geographic reach into regions lacking guidance for such climate conditions, making the long-term durability of stabilized geomaterials central to infrastructure resilience.

Climate change is significantly altering the behavior of geomaterials, impacting their mechanical, hydraulic, and thermal properties, and these changes pose challenges to the stability of infrastructure, to environmental protection, and to engineering design. With the increasing frequency of extreme and compounded climate events, understanding these impacts has become critical to advancing both research and engineering practice. This Special Issue explores the evolving interactions between climate change and geomaterials, including soils, rocks, construction materials, and geosynthetics. It features interdisciplinary research on geomaterial characterization, performance assessment, degradation mechanisms, stabilization, resilience strategies, and predictive modeling under climate-induced stresses. Applications include transportation, energy systems, environmental management, waste containment, coastal protection, and underground infrastructure. By highlighting innovative approaches and adaptive solutions, this Special Issue aims to support sustainable engineering practices and enhance the resilience of geomaterials in a rapidly changing environment.