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1 .This is Scientific American 60-Second Science. I'm Cynthia Graber. This'll just take a minute.
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2 .We humans love to decorate things.
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3 .We wear flashy clothes, tie ribbons to suitcases and personalize the cases for our iPhones.
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4 .And apparently we've had this tendency for a long, long time.
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5 .More than thirty-four thousand years, to be exact.
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6 .Harvard researchers, together with Israeli and Georgian scientists, recently discovered the oldest known fibers used by humans, in a cave by the foothills of Georgia's Caucasus Mountains.
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7 .The researchers weren't searching for thread.
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8 .They were looking for tree pollen samples that would reveal how environmental and temperature fluctuations influenced people's lives.
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9 .But they knew they'd found something historic when they saw the colored thread.
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10 .The fibers were made from wild flax.
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11 .Some were twisted, indicating rope, while others were knotted.
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12 .They might have been used to sew pieces of clothing to keep these ancient people warm.
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13 .Or maybe they tied together packs that would allow the group to be more mobile.
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14 .The strings could also have served as handles for stone tools.
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15 .The fibers were colored black, grey, turquoise and pink.
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16 .So in addition to cave paintings, we now have evidence of cave fashion, the first tentative steps on the way to the cover of Vogue.
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17 .Thanks for the minute, for Scientific American 60-Second Science. I'm Cynthia Graber.
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