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This photo provided by Bence Viola in October 2022, shows the Chagyrskaya Cave area in Siberia, Russia. In a study published Wednesday, Oct. 19, 2022, in the journal Nature, researchers were able to pull DNA out of tiny bone fragments found in two Russian caves, and used the genetic data to map out relationships between 13 different Neanderthals for clues to how they lived. (Bence Viola via AP)