How Edvard Munch's painting 'The Scream' might look in 300 years' time

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 the ravages of time. A new digital tool now shows how much "The Scream" may change over the next 300 years.