DNA study cracks centuries-old mystery over origin of languages spoken by half the world
These language families, including Germanic, Indo-Iranian and Celtic, evolved from a common tongue called the Proto-Indo-European, whose origin has been a mystery. In the new study, researchers at Vienna University analysed DNA samples of 435 people from archaeological sites across Eurasia dating to between 6400BC and 2000BC and found that a newly recognised ancient population inhabiting the steppe grasslands of the Caucasus and the Lower Volga was connected to all modern populations speaking Indo-European languages.