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Scientists reveal the surprising genetic identity of early human remains from roughly 400,000 years ago in Spain (Atapuerca). New tests on human bones hidden in a Spanish cave for some 400,000 years set a new record for the oldest human DNA sequence ever decoded—and may scramble the scientific picture of our early relatives. The bones were first thought to belong to European Neanderthals, but analysis showed they are genetically closer to the Siberian Denisovans.