Cast (in credits order)
| Orson Welles | ... | Host | |
| Rest of cast listed alphabetically: | |||
| Richard Berendzen | ... | Self | |
| Ashley Montagu | ... | Self | |
| Philip Morrison | ... | Self | |
| Carl Sagan | ... | Self | |
 |
Krister Stendahl | ... | Self |
|
|
Peter Thomas | ... | Narrator (voice) |
| George Wald | ... | Self | |
Produced by
| Robert Drew | ... | producer |
Editing by
| Anne Drew | ||
