Watch March of the Penguins

A diver visits the same octopus every day for a year in a South African kelp forest.

Activists film the dolphin hunt at Taiji with hidden cameras.

Operation Highjump: four thousand American servicemen and thirteen ships sent to map Antarctica in 1946.

Al Gore's slideshow on climate change; the cherry picker up the CO2 graph.

RKO’s adaptation of Rachel Carson’s book - she hated the script and never sold film rights again.

The first Disney True-Life Adventure feature: the Sonoran desert, and a scorpion square dance nobody has forgiven.

Disney on the American plains, and the bison birth that got the film briefly banned in New York.

Cousteau and Louis Malle invent the underwater documentary, in colour, from aboard the Calypso.