SOUTH AFRICA's ailing anti-apartheid hero Nelson Mandela is doing much better in hospital, his ex-wife Winnie said on Friday before a visit by U.S. President Barack Obama that will include a personal homage to the globally admired statesman. The faltering health of the first black president of South Africa, a revered symbol of racial reconciliation, has drawn world attention since the 94-year-old was rushed to hospital with a recurring lung infection nearly three weeks ago. Soma zaidi...