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Explore the origins and spread of the Indo-European language family, the world's largest language group with over 3 billion native speakers, in this 56-minute conference talk from Harvard's Big Data Conference 2025. Discover how recent advances in ancient DNA analysis from fossils have revolutionized our understanding of this linguistic family that spans vast geographical regions. Learn about the latest scientific findings that have helped resolve questions that have puzzled researchers for nearly 250 years, as the speaker presents the current knowledge about how Indo-European languages arose and dispersed across the globe. Gain insights into the intersection of linguistics, archaeology, and genetics that has provided new clarity on the broad outlines of Indo-European origins and migration patterns.