Dr. Hannah Fry

In this series, mathematician Dr Hannah Fry explores the mystery of maths. It underpins so much of our modern world that it's hard to imagine life without its technological advances, but where exactly does maths come from? Is it invented like a language or is it something discovered and part of the fabric of the universe? It's a question that some of the most eminent mathematical minds have been wrestling with. Dr Eleanor Knox from King's College London believes it's discovered, Prof Hiranya Peiris from University College London believes it's invented, while Prof Jim Gates from Brown University believes it's both, and Prof Brian Greene from Columbia University has no idea. The jury is very much divided. To investigate this question, Hannah goes head first down the fastest zip wire in the world to learn more about Newton's law of gravity, she paraglides to understand where the theory of maths and its practice application collide, and she travels to infinity and beyond to discover that some infinities are bigger than others.

What does it take to get a million people and their luggage off the ground and up in the air?

Broadcast live from Didcot Rail Centre, in the middle of the Great Western Railway, Peter Snow is joined by some of the most enthusiastic and passionate train lovers, collectors and enthusiasts from across the country.