Aired Tuesday November 21, 1:30am - 2:00amon Quest +1

How Do They Do It?

Series 15 Episode 5

It's been tipping over for 800 years, what's the gravity-defying magic behind Pisa's leaning tower? And, how are chocolate digestive biscuits manufactured?

Documentary / Educational / Science
Original air date
Cast and crew
  • Rupert DegasNarrator