How Do They Do It?

Name: 1:30pm - Series 12 Episode 20
Start: 2023-11-20T13:30:00Z
End: 2023-11-20T14:00:00Z
Location: Quest +1

Series 12 Episode 20

How do they build massive tunnels to prevent blackouts in one of the world's biggest cities, and how do they turn millions of hectares of pine forest into perfect pieces of timber?