Dixon Mumia

        By Rose TROUP BUCHANAN   Along the muddy tracks of a sprawling slum in Kenya's capital Nairobi, scores of teenagers learn how to fence each weekend under Mburu Wanyoike, whose initiative offers hope in a place bedevilled by crime and lack of opportunity. Several hundred thousand people live in closely packed poverty in Mathare, many born there like 27-year-old Wanyoike, who a decade ago was on […]