Scientists Discover a New Compound in Medieval Ink That Was Once Lost to Time

Across the Mediterranean region, in fields and on roadsides, thrives a small plant with silvery leaves. It doesn't look like much, and in many cases it's an annoying weed. But in the Middle Ages, Chrozophora tinctoria was highly prized.
Read more: https://www.sciencealert.com/we-finally-know-how-medieval-artists-created-this-gorgeous-delicate-blue-pigment?source=Snapzu