Perishable materials usually rot away, so the oldest string on record only dates back 30,000 years. But perforations in small stone and tooth artifacts from Neanderthal sites in France suggest the pieces were threaded on string and worn as pendants. Now, Bruce Hardy and his colleagues have found slender, 07-millimeter-long plant fibers that are twisted together near some stone artifacts at a site in southeast France that was occupied by Neanderthals 90,000 years ago. Such fibers aren't twisted together in nature, says the team, suggesting that the Neanderthals were responsible.
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