I Heart Skull-Crusher! launches in one month’s time ... “I’m completely immersed and I can’t stop drawing it!” ...

The skull sectioned is a drawing by Leonardo da Vinci (1452-1519 ... with his analysis of the role of the aortic valve in the working of the heart. In the final years of his life, surveying ...

His diagrams and sketches of the skull, skeleton ... Mr Wells' book, 'The Heart of Leonardo', explores the artist's drawings and writings on the organ, and he says his insights are "quite ...