By Tobias Carroll When examining something recently unearthed after centuries, scientists have numerous ways in which they can delve into its origins. That ranges from carbon-dating to examining human remains for clues about their diet and lifestyle. But for an international group of archaeologists based at the University of Haifa who are looking into a ship that sank over a thousand years ago, there’s been an unexpected source of information — the bodies of rats. The vessel is known as the Ma’gan Mikhael B, and it sank sometime between 640 and 740. The ship traveled throughout the Mediterrane…