12.10 Harris Tweed
The development of industrialisation in controlled laboratory experiments on the islands of Harris and Lewis, where wool spun in a factory is still woven by hand.
(R)

12.35 Drinking Motivation in Animals
Models and diagrams are used to explain the mechanism of drinking, and film illustrates the drinking behaviour of animals in the wild and in controlled laboratory environments.
(R)

(to 1.05)