If your great-grandparents ever saw "The Scream," they probably experienced a slightly different painting than the one we see today. Edvard Munch used materials that make his paintings vulnerable to ...
On the right, The Scream as it may appear in 300 years. Some areas, such as the green ones, are very stable. Cadmium yellow and vermilion red are far more vulnerable. The new tool, "Light Damage ...