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1 .This is Scientific American 60-Second Science. I'm Sophie Bushwick. Got a minute?
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2 .Iron is a great material for making tools.
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3 .But the oldest known iron artifacts were actually intended for decoration: nine Egyptian beads that date back to 3200 B.C.
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4 .And now we know that this ancient jewelry has an even more impressive origin, the iron out of which it was crafted came from space.
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5 .The metal cylinders were discovered in Egypt in 1911.
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6 .To analyze the structure and chemical composition of the beads, researchers bombarded them with neutrons and gamma rays.
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7 .The tests revealed that the jewelry contained trace elements not present in Earthly ores, but that are found in iron-rich meteorites.
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8 .The study is in the Journal of Archaeological Science.
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9 .The meteoric metal was hammered flat and rolled into beads more than 5,000 years ago.
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10 .This date is some 1,500 years before the invention of smelting.
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11 .That technique made it possible for terrestrial iron to be shaped into tools,
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12 .and to supplant copper and bronze as civilization's metal of choice.
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13 .The new finding shows that long before smelting revolutionized tool use, some humans were already iron men.
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14 .Thanks for the minute, for Scientific American 60-Second Science. I'm Sophie Bushwick.
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