Tracing the spread of Germanic languages using ancient genomics.

Sequencing 712 ancient genomes shows a Baltic-linked population entered Sweden by around 4000 BP and spread across Scandinavia by 3500 BP, reshaping Germanic arrival timing.

• Why it matters: The prehistoric arrival and Iron Age diversification of Germanic languages in northwest Europe are disputed, and archaeology alone has not pinned down timing or routes.
• What they did: The study sequenced 712 ancient human genomes and analyzed them with 4,009 previously published genomes to trace ancestry shifts across Sweden, Scandinavia, and surrounding regions.
• The result: It links Germanic introduction to Scandinavia about 800 years later than traditional estimates, and it tracks later southward and Migration Period back-migrations involving Anglo-Saxons, Langobards, Denmark, and southern Sweden.

AI summary of the abstract · may contain errors · not medical advice · read the paper.