![](https://tv.assets.pressassociation.io/68f0ce0b-4361-5823-824a-1db850c09da6.jpg)
![](https://tv.assets.pressassociation.io/68f0ce0b-4361-5823-824a-1db850c09da6.jpg)
![](https://tv.assets.pressassociation.io/68f0ce0b-4361-5823-824a-1db850c09da6.jpg)
![](https://tv.assets.pressassociation.io/68f0ce0b-4361-5823-824a-1db850c09da6.jpg)
How Do They Do It?
Insulin/Salad/Rigging
Season 10 Episode 4 of 20
The production of insulin from a loaf of bread, the manufacture of rigging for ships and how green salad is cultivated on scorching desert planes
How Do They Do It? airs on Discovery Turbo +1 at 12:30 PM, Saturday 29 June. (Subtitles.)
Topics
Education ➝ Science ➝ Factual Topics
General