The University of Notre Dame will celebrate the 20th anniversary of its Center for Social Concerns on Thursday (April 24) with an open house, a prayer service and 20 feet of birthday cake.p. The center will be open to visitors from 3-5 p.m., a prayer service of thanks and blessing will be held at 4:15 p.m., and birthday cake will be served on the Fieldhouse Mall from noon to 1:30 p.m.p. Rev. William Lies, C.S.C., executive director of the center, and Rev. Don McNeill, C.S.C., director emeritus, will preside at the prayer service.p. Established in 1983 and housed in the former WNDU building on campus, Notre Dame’s Center for Social Concerns attempts to nurture a concern for justice and peace among Notre Dame students by offering a variety of formative educational and other service opportunities. Almost 80 percent of Notre Dame undergraduate students participate in community service projects or academic “serving/learning” courses and seminars coordinated by the center.p.