Scientist Discovers Hidden Drawing Beneath the 'Mona Lisa'

Leonardo da Vinci's Mona Lisa continues to fascinate art observers with its compositional secrets. Recently, a scientist by the name of Pascal Cotte discovered a never-before-seen sketch beneath the masterpiece. Cotte has studied the Mona Lisa for over 15 years, having begun his research in 2004 when the Louvre allowed him to take photographic scans of the work. "The Louvre invited me because I am the inventor of a new very high-resolution, highly sensitive multispectral camera," Cotte told Artn...