Ink in ancient manuscripts can shed lighton how life was in those times. Scientists from the University of Copenhagen (Denmark), the Autonomous University of Mexico and the ESRF have discovered copper in Egyptian papyri, ranging from the 1st century BC to the 3rd century AD, indicating that the ink originated from the soot in glass and metallurgy workshops and mines.
Image: A papyrus from the Tebtunis library. Credits: University of Copenhagen