How Do They Do It?

Hearing Aids, Trains

Documentary

S16, E19: Hearing aids are produced that are nearly invisible and connect wirelessly to phones, TVs and stereos. Also, see how trains are built for London's new underground railway and how actors are crafted for one of the world's oldest art forms, shadow puppetry.

May 2, 2022 · 20m

Information

Released
2022
Run Time
20 min
Rated
TV-PG

Languages

Original Audio
English
Audio

English (United States) (AAC)

Subtitles

English (United States) (CC)

Accessibility

Closed captions (CC) refer to subtitles in the available language with the addition of relevant non-dialogue information.