LONDON - George Michael, the British pop superstar who reached early fame with WHAM! and went on to a solo career lined with controversies and chart-topping hits that blended soul and dance music with daring social and personal commentary, has died, his publicist said Sunday. He was 53. Michael died at his home in Goring, England. His publicist, Cindi Berger, said he had not been ill. Michael's manager, Michael Lippman, says the cause of death was heart failure. His family issued a statement through Thames Valley Police saying that he "passed away peacefully at home over the Christmas period...