Peru’s informal diggers get permit extension through next year
Temporary permits are meant to allow small-scale diggers to continue working while they formalize their operations.
Ink from ancient Egyptian papyri contains copper
A new study by researchers at the University of Copenhagen revealed that the brownish colour that shows up in many papyrus scrolls from ancient Egypt came from copper-infused ink, as opposed to just carbon ink. Using advanced synchrotron radiation-based X-ray...
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