Sosina Wogayehu learned to do flips and splits at the age of six, sitting on the floor of her parents' living room in Addis Ababa, watching a German variety show on the only television channel in the land. She sold cigarettes on the Ethiopian streets at the age of eight, and she played table soccer with her friends who made money from washing cars, barefoot in the dust. And, she dreamed of being a circus performer. Twenty-five years later, Sosina...