Watch The Hellstrom Chronicle

Cousteau’s Conshelf II: six men living for a month in a steel house on the floor of the Red Sea.

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

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

Emperor penguins walk seventy miles to breed in the Antarctic winter; Morgan Freeman narrates.

Activists film the dolphin hunt at Taiji with hidden cameras.

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.