How Do They Do It?

Season 16 Episode 19: Hearing Aids, Elizabeth Line Trains, Shadow Puppets

Many items that make up the modern world are the result of sophisticated engineering and production processes. How do they do it?

Genre:

Documentary

Seasons:

17

Episodes:

287

Cast:

Quality:

HD

Duration:

22 min

First Air:

2006

Rating:

7.5