Viking ship cracking upEperts are worried about one of Norway's national treasures. Archaeologists have discovered cracks in the hull of he famed Oseberg Viking ship, which may halt plans to move the vessel to a new museum.The archaeologists have been carefully going over the nearly 1,200-year-old ship, and are concerned about what they see, reports newspaper Aftenposten.Removal of the vessel's top deck has revealed some exciting new details, like graffiti from the Viking age and details of the ship's rigging. But it's also exposed cracks that make archaeologists worry the ship won't tolerate any move to new quarters.There have been...