The natural sciences at the University of San Diego include four departments: Biology, Chemistry and BioChemistry, Physics, and Marine Science & Environmental Studies.  Curricula in the sciences are centered around the belief that students learn best when theoretical concepts are combined with hands-on experience.  Students in the sciences take numerous lab and field courses that provide opportunities to learn useful techniques and participate in the scientific process.  Many students carry out research and perform internships that complement their formal course work.  Interdisciplinary collaborations are common among faculty and students in different departments.  These interactions are enhanced by the inclusion of all four science departments in one building, the Shiley Center for Science and Technology.  The Center contains classrooms, offices, and modern labs that are used for teaching as well as faculty and student research.