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Using a mathematical model , they demonstrate that ocean currents or large fields of random eddies and vortices can sporadically concentrate a steady ocean swell to create unusually large waves . This course surveys the field of environmental economics & policy and examines some of the key issues within it in considerable depth . The IREX Internship Program is designed to give students and young professionals the opportunity to develop valuable skills and firsthand experience in the field of international exchanges and training programs . The degrees are a response to changes in the field of biological sciences and an effort to remain consistent with the department name . In addition to the requirements drawn from existing courses in the humanities , social sciences , mathematics , and sciences , two new interdisciplinary courses , designed both to introduce the field of environmental studies and to apply this knowledge in a capstone seminar emphasizing specific cases , are required .