Researchers studying Edvard Munch’s Madonna (left) discovered hidden underdrawings (right) that reveal how the artist tinkered with his composition over time. Nasjonalmuseet / Børre Høstland Edvard Munch’s Madonna toes the line between sensational and spiritual. One of the Norwegian artist’s most controversial paintings, the 1894 work depicts a naked woman arching her back, long […]