Aired Wednesday December 6, 11:30pm - 12:00amon Quest

How Do They Do It?

Series 16 Episode 9

How do they build a tractor every three minutes to power Indian agriculture? How do they cast the bronze bells that help Swiss farmers keep track of their cows?

Category
Documentary / Educational / Science
Original air date
2019-10-11
Cast and crew
  • Chris BroylesNarrator