We revisit the life of the greatest artist in history as Ken Burns releases his new documentary “Leonardo da Vinci.” Leonardo da Vinci was one of the greatest artists in the history of the world. And he loved understanding how things worked, coming up with designs for helicopters, robots, a self-propelled car, and machine guns centuries before they got made. He was also one wacky guy!  See omnystudio.com/listener for privacy information.