The Golden Thread is a collection of stories about gold - a metal most people recognise, many possess, yet few grasp how diverse and empowering it has proven for humanity.  From clean-tech innovators using gold to convert carbon dioxide to biofuel, to NASA engineers relying upon the metal in space instrumentation, the series saw us document the stories of 10 leading thinkers from around the world whose use of gold is varied and surprising.

Presented by Dr Hannah Fry, the core episodes are complemented by a suite of additional edits, animations and 360 stills and video, all hosted on a dedicated microsite.