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

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.

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.

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.

Hannah heads to the National Highways control centre to learn more about the UK's extensive motorway system and learns the parts a mathematician, F1 legend, and 1960s road signs played in shaping them.