The Secret Genius of Modern Life Season 3 Episodes

Episode 1

Air Fryer

59 mins

Hannah explores the Air Fryer's surprising history, from its accidental creation to a WWII pilot's cold dinner.

Episode 2

Fridge

59 mins

Hannah hits the production line with appliance giant Bosch to find the lifeblood at the heart of every fridge and gets a lesson in carrot droop.

Episode 3

Rollercoaster

Hanna uncovers the wild origins of the modern-day rollercoaster and gets the inside story on the UK's newest, tallest and fastest coaster, Thorpe Park's Hyperia.

Episode 4

Doorbell

The smart doorbell is a top tech success. Hannah visits Ring in LA to explore its history, from a tinkerer, Soviet spy tech, and a student's thirst to security staple.

Episode 5

Motorway

Hannah Fry uncovers the secrets behind the miraculous technologies of the modern world, revealing the mind-blowing stories behind their invention.