Barbara J. King Barbara J. King is a contributor to the NPR blog 13.7: Cosmos & Culture.

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Picture shows what scientists say are Neanderthal cave-paintings inside the Andalusian cave of Ardales, on March 1, 2018. The cave-paintings, found in three caves in Spain, were created between 43,000 and 65,000 years ago, at least 20,000 years before modern humans are believed to have arrived in Europe. AFP/Getty Images hide caption

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