Researchers from the University of Florence, Harvard University and the Max Planck Institute for Evolutionary Anthropology in Leipzig have used ancient DNA to challenge long-held interpretations of the people of Pompeii. Contrary to physical appearances, the DNA evidence revealed unexpected variations in gender and kinship, revising the story as written since 1748. The genetic data also underlined the cosmopolitan nature of the Roman Empire, showing that Pompeians were mainly descended from immigrants from the eastern Mediterranean.