ScienceLooking after LeonardoTo play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoScienceDany Mitzman12/15/2014December 15, 2014In the north Italian city of Turin, a rare exhibition called "Leonardo and the King's Treasures" features as its main attraction Leonardo da Vinci's self-portrait. It's seldom on show because displaying it is a risky and costly business.https://p.dw.com/p/1E5EwAdvertisement Report: Dany Mitzman, Turin