Edinburgh Book festival 'stripped' for comics

Edinburgh's international book festival is getting Stripped and ready with a strand devoted to comic books. It has more than 40 events featuring many of the writers and artists behind the comics and graphic novels. Arts correspondent Pauline McLean talked to Glasgow author Denise Mina and James Kakalios, who describes himself as a "mild-mannered physics professor at the University of Minnesota". He is the author of The Physics of Superheroes.