A decade ago, archaeologists made a grisly discovery when they unearthed two Neolithic mass graves at the sites of Bergheim and Achenheim in northeastern France. The pits contained severed limbs and human skeletons, evidence of excessive violence and mutilation that did not match normal Neolithic patterns. Some deceased individuals buried in other nearby graves, however, showed no signs of brutality. A new study has recently analyzed the chilling remains to try and reconstruct the identities of the individuals and determine why some were treated so cruelly, according to a statement released by the University of Oxford. Researchers conducted multi-isotopic analysis...