InBiz: Hidden Depths: 02 Sept 10

London-born Graham Hawkes is the man who has created a submersible vessel that flies through the deepest ocean like a plane. Peter Day reports from his workshop in California, where he wonders why space exploration makes decades of headlines while it is so hard to get backers for deep sea travel into a world no-one has ever seen. Producer: Sandra Kanthal Editor: Stephen Chilcott