The Big Ice

Though it plays hell with cameras, Antarctica has long fascinated filmmakers. This hour-long National Film Unit documentary was assembled from a five-part TV series of the same name. It looks at scientific research, early explorers, and Antarctica's affect on global climate. Made almost four decades ago, the programme warns of a possible "new and potentially dangerous warming period", and describes the greenhouse effect as a "controversial scientific theory". The large cast includes penguins, a seal birth (clip two) and a heavyweight team of Kiwi scientists.