Trainer | The Secret Genius of Modern Life
Hannah Fry visits eBay's authentication centre, where they are waging war against fake high-value trainers. She discovers how American breakfast waffles transformed our trainer soles and how an 18th-century tea set led to the use of celebrity endorsement.Tweet
Lift | The Secret Genius of Modern Life
Hannah goes behind the scenes to look at the technology behind the lift, entering a 246m high lift shaft to test everything from the brakes to her own fear of heights.
Headphones | The Secret Genius of Modern Life
Headphones: these marvels of miniaturisation are worn by 30 million people in the UK. Hannah Fry visits Bose to find out how the teeny earbud tech works and meets the human testers with 'golden ears'.