Civil engineering is fundamentally concerned with creating the built environment that sustains modern society, its transportation networks, water systems, buildings, energy infrastructure, and public spaces. These systems must not only function under normal operating conditions but must also endure the wide range of uncertaintiesUncertainty inherent in the natural and human-made world. As climate changeClimate change intensifies extreme weather, urbanization accelerates exposureExposure to hazards, and infrastructure systems age, the capacity to anticipate, evaluate, and manage risk has become a defining element of contemporary engineering practice.