The undergraduate program in Environmental Systems Engineering aims to prepare students to develop and incorporate environmentally sustainable design strategies and practices into natural and built systems and infrastructure ranging from buildings and energy systems to water resources and coastal regions. Courses in the program are multidisciplinary, combining math/science/engineering fundamentals and tools and skills considered essential for an engineer, along with a choice of one of four focus areas for more in-depth study: sustainable coastal systems, sustainable energy systems, sustainable freshwater systems, or sustainable urban systems. This major offers more flexibility in the curriculum than the Civil Engineering degree program and requires fewer units. The program of study, which includes a capstone experience, aims to equip engineering students to take on the complex challenges of the twenty-first century involving natural and built environments in consulting and industry as well as in graduate school.