CultureAnother 'Mona Lisa' Secret Unveiled: Rare Compound Discovered in Leonardo Da Vinci's Masterpiece Researchers have stumbled upon an unusual compound in the first layer of paint in Leonardo da Vinci's masterpiece, Mona Lisa.by Inno Flores
ScienceLeonardo da Vinci may have secretly created a Mona Lisa in 3D, researchers investigateby Jim Algar
ScienceBeyond that Mona Lisa smile: Did Leonardo da Vinci create the first 3D image?by Alexander Saltarin