Big changes could be coming to the media world after Rupert Murdoch made an $80 billion bid to buy Time Warner. The offer was rejected, but that doesn't mean it’s the end of the story. If Murdoch succeeds, he would wind up with movie and TV studios like Warner Brothers and HBO. This week on Money Talking, regular contributors Joe Nocera with the New York Times and Rana Foroohar with Time magazine consider what would happen if Rupert Murdoch succeeds in purchasing Time Warner.