Leonardo da Vinci transformed mapping from art to science

At the beginning of the 16th century, Leonardo da Vinci returned to Florence after almost two decades in the employ of Ludovico Sforza, Duke of Milan. Nearing 50, Leonardo was already famed for his scientific genius and artistic achievements, including the design of an innovative catapult around 1485 and the fresco The Last Supper (1495-98). Combining practicality and…