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Ars Technica
Dec 2, 2020, 12:42 pm90 ptsEnlarge / Detail of a medical treatise from the Tebtunis Temple Library with headings marked in red ink. (credit: The Papyrus Carlsberg Collection) An international team of scientists used high-energy X-rays to analyze 12 fragments from ancient Egyptian papyri and found lead compounds in both red and black inks…
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