Ancient DNA reveals a farming shift that pushed a society to the brink

A new interdisciplinary study published in Nature traces more than 2,000 years of population history in Argentina's Uspallata Valley (UV), a key southern edge of ancient Andean farming. The research offers new insight into how agriculture reshaped societies and how people coped with long periods of hardship. By combining ancient human and pathogen DNA with isotopic data, archaeology, and paleoclimate records-and working closely with Huarpe Indigenous communities-the team s...