As the sun rises, the bus crosses the River Spree, pulling through the gates of Berlin’s Humboldt University. Hundreds of young adults perch in the stone courtyard, some hanging from the balcony, guarded by marble pillars and neoclassical Roman roof sculptures. Guitars in hand, a chorus of ‘C’s serenade them—Cape Verdeans, Cambodians, Cameroonians, Czechs, Chileans, Colombians, Costa Ricans and Cubans. They greet the tardy Canadians, voices filling the sweltering damp dawn with Cat Stevens’s song Baby, Baby It’s a Wild World--