Espen Øino is to boats what Ian Callum is to cars. Here, the naval architect and offshore engineer offers a greener future for the luxury yacht industry

Forget dog tags and surfer beads – gentlemen's jewellery has had an upgrade

Would you wear a diamond grown in a laboratory? We investigate the future of Silicon Valley's sparklers

As the time-honoured tradition of gouache continues to defy the tech era, discover the craftsmen turning paint and paper into precious jewels