We use cookies to improve your experience of our website. Cookies perform functions like recognising you each time you visit and delivering advertising messages that are relevant to you. Read more here
S1-E4 Hearing Aids/3D Puzzles/Toilets

S1-E4 Hearing Aids/3D Puzzles/Toilets

not currently available
Add this to your watchlist to find out when it is available via broadcast or catch-up.
Watchlist
ADVERTISEMENT

Summary

How the designs of hearing aids, 3D puzzles and toilets were conceived, and the ways in which they have evolved.

Science

Have Your Say What did you think of Hearing Aids/3D Puzzles/Toilets?

view all comments (0)