Today we tell you the story of a modern man who lived centuries ago. A scientist, and an artist, the man was Leonardo Da Vinci. Most of us think of him as an artist, and we've all seen copies of his great picture, The Last Supper. That picture was painted long ago, in 1496, on the wall of a room in a convent in Milan, and yet today a copy of this picture hangs in many of our homes. It is not only the story of Leonardo the artist that we are interested in today. It's the story of Leonardo the artist and scientist that we bring you...