A review of the sciences.
Introduced by Colin Riach.

The Dolphins that Joined the Navy
American Navy scientists are engaged in an intensive programme of research on the most intelligent and friendly of sea creatures, the dolphin, and in particular on its almost uncanny powers of navigation.
Tonight's film includes scenes showing researchers trying to speak directly to these animals and dolphins talking to each other through underwater telephones.

A Theory of the Earth
The eminent Canadian geologist, Professor Tuzo Wilson, explains his new 'Froth on the Broth' theory of the structure of the earth to David Wilson before his recent lecture to the Royal Geological Society.