caves wind through a set of caverns, some of which are challenging, narrow passages. Tree Nine is another popular destination for students. A large Douglas fir spanning approximately tall, Tree Nine is located in the upper campus of UCSC behind College Nine. The tree had been a popular climbing spot for many years but due to environmental corrosion and fear of student injuries, UC ground services sawed off the limbs to make it nearly impossible to climb. Less experienced tree-climbers also used to frequent Sunset Tree located on the east side of the meadow behind the UCSC Music Center, but the lower branches of this tree were also cut off to make climbing the tree difficult. The UCSC campus is also one of the few homes to Mima Mounds in the United States. They are rare in the United States and in the world in general. Academics The university has five academic divisions: Arts, Engineering, Humanities, Physical & Biological Sciences, and Social Sciences. Together, they offer 65 graduate programs, 64 undergraduate majors, and 41 minors. Popular undergraduate majors include Art, Business Management Economics, Chemistry, Molecular and Cell Biology, Physics, and Psychology. Interdisciplinary programs, such as Computational Media, Feminist Studies, Environmental Studies, Visual Studies, Digital Arts and New Media, Critical Race & Ethnic Studies, and the History of Consciousness Department are also hosted alongside UCSC's more traditional academic departments. A joint program with UC Hastings enables UC Santa Cruz students to earn a bachelor's degree and Juris Doctor degree in six years instead of the usual seven. The "3+3 BA/JD" Program between UC Santa Cruz and UC Hastings College of the Law in San Francisco accepted its first applicants in fall 2014. UCSC students who declare their intent in their freshman or early sophomore year will complete three years at UCSC and then move on to UC Hastings to begin the three-year law curriculum. Credits from the first year of law school will count toward a student's bachelor's degree. Students who successfully complete the first-year law course work will receive their bachelor's degree and be able to graduate with their UCSC class, then continue at UC Hastings afterwards for two years. Research According to the National Science Foundation, UC Santa Cruz spent $127.5 million on research and development in 2018, ranking it 144th in the nation. Although designed as a liberal arts-oriented university, UCSC quickly acquired a graduate-level natural science research