A recent chemistry study by scientists at the University of Antwerp has uncovered evidence showing that the paintings of Vincent Van Gogh have slowly but surely been changing colors over the course of a century due to a rare lead pigment used for red paints that gradually fades when exposed to light.  “Normally, the idea is these paintings are there for a hundred years, or five hundred years, and they’re static – nothing really changes,” says researcher Koen Janssens. “But the opposite is actually true when you look in detail.”
Read more at Chemistry World