In this undated image released by France's Culture Ministry Tuesday May 13, 2008, a life size marble bust of Julius Cesar is seen. The bust, probably dated 46 BC, was discovered last year after underwater searches in the Rhone River near Arles, southern France. (AP Photo/Culture Ministry, C. Chary) Divers trained in archaeology discovered a marble bust of an aging Caesar in the Rhone River that France's Culture Ministry said Tuesday could be the oldest known. The life-sized bust showing the Roman ruler with wrinkles and hollows in his face is tentatively dated to 46 B.C. Divers uncovered the...