One of Spain's most iconic paintings - Pablo Picasso's Guernica is undergoing a hi-tech health check.<br /><br />Every night a robot - nicknamed Pablito - uses advanced infrared and ultraviolet photographic technology to take tens of thousands of tiny shots of the painting.<br /><br />Analysts are then able to see scratches undetectable by the human eye.<br />http://www.euronews.net/
