Analysis of ancient DNA recovered from a burial site close to Paris has uncovered a dramatic prehistoric demographic shift. It appears that one local population disappeared entirely and was subsequently replaced by individuals originating from the south. Genetic evidence indicates no ancestral link between these two distinct groups, pointing to a significant societal upheaval occurring around 3000 BC. While diseases, including early forms of the plague, are suspected to have contributed to this transition, they were likely not the sole drivers. This population replacement also brought about profound societal changes, marking the end of communal burials for close-knit families and coinciding with the decline of Europe’s megalith-building cultures.

