Edvard Munch's masterpiece The Scream is hanging again in an Oslo museum today, 4 years after armed robbers stole it in broad daylight, CNN reports. The painting has been undergoing restoration since it was retrieved in 2006. It was structurally damaged, stained, scratched (exposing cardboard beneath the paint) and “considerably” dirtier, curators say, but “the artistic value … has not been reduced.” (More art heist stories.)