Simon Schama examines 'The Power of Art' [audio 0min]

In his new book The Power of Art (Ecco), based on a recent BBC2 TV series, author Simon Schama argues that great art does nothing less than make you see the world in a new way. Schama considers the stories behind eight masterpieces, from Caravaggio's David with the Head of Goliath to Picasso's Guernica.