In the 25th year of the BBC's Natural History Unit, the last in a series of 26 parts. Narrator David Attenborough
Do Animals, Other than Humans, have Language? Alison Jolly and Peter Marler of Rockefeller University, New York and Robert Seyfarth of University of California at Berkeley, consider whether the sounds animals make constitute a language.
Written and produced by MICHAEL BRIGHT BBC Bristol