How we shook the world of very large numbers

How did an edition of More or Less from 2017 end up influencing the choice of official names for extremely large numbers? We tell the tale of how an interview between presenter Tim Harford and maths whizz Rob Eastaway did just that. Also featuring Professor Richard Brown, head of metrology at the UK’s National Physical Laboratory.

Presenter: Tim Harford Producer: Jon Bithrey Editor: Richard Vadon Production Coordinator: Janet Staples Sound Engineer: James Beard

Image: Large number, Credit: Getty Images