The LIU PhD in Computational Science & AI is an innovative, research-driven doctoral program preparing the next generation of scientists, engineers, and innovators. Designed for maximum interdisciplinary impact, the program integrates computational modeling, high-performance computing, and AI methodologies to address urgent problems across health, environment, security, and society. Graduates will be prepared to lead in AI research and development, biomedical and health analytics, climate and environmental science, cybersecurity and resilience engineering, and across industry R&D labs, federal agencies, and academia. AI-centered curriculum bridging computation, theory, experimentation, and real-world applications. Interdisciplinary by design, linking STEM, health sciences, environmental studies, business, and public policy. Research immersion from year one with faculty labs and collaborative research centers. Industry and federal partnerships supporting applied research and workforce readiness. Flexible pathways for students from diverse academic backgrounds, including computing, engineering, life sciences, and mathematics.