The hunt for the origin of writing reveals the link between ancient Egyptian hieroglyphs and the letters we use every day.

Presenter Lydia Wilson and calligrapher Brody Neuenschwander set out to explore history’s most important technology - the technology of putting words on a page.

For more than a century, the world has seemed to be moving to a single universal script - the Latin alphabet. But that means more than changing words. It means changing identity.