Archaeology

Ink from ancient Egyptian papyri contains copper.

13/11/2017 0

Until recently, it was assumed that the ink used for writing was primarily carbon-based at least until the fourth and fifth centuries AD. But in a new University of Copenhagen study, analyses of 2,000-year-old papyri […]

Archaeology

Ice stream retreats under a cold climate.

19/10/2017 0

Why did the Jakobshavn Isbræ ice stream in West Greenland retreat under a cold climate period called the Younger Dryas? A research article, published in Nature Communications, shows that a warmer ocean surface in central-eastern […]