Ancient DNA
A new study in Nature examines over 2,000 years of population history in Argentina's Uspallata Valley, showing local hunter-gatherers adopted farming rather than it being introduced by migrants. Later, maize-dependent groups from nearby areas migrated into the region amid climate instability, disease, and population decline. Kinship networks helped communities endure without evidence of violence.
Iniulat ng AI
Researchers at Uppsala University have used ancient DNA to reveal that Stone Age burials in Sweden involved extended family members beyond immediate relatives. Analysis of shared graves at the Ajvide site on Gotland shows second- and third-degree kin were often buried together, suggesting strong community ties. The findings challenge assumptions about simple family structures in hunter-gatherer societies 5,500 years ago.