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Why did humans start speaking? Scientists suggest genetics played a big role. They say the evolution of this singular ability has been key to our survival. A new study links a particular gene to the ancient origins of spoken language. Researchers at Rockefeller University say a protein variant found only in humans may have helped us communicate in a novel way, giving us an edge over extinct cousins like Neanderthals. When put in mice, it changed the way they vocalized when they called out to each other. The research was published Tuesday in the journal Nature Communications.
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