A documentary about global warming.

With Once Upon a Forest, Luc Jacquet invites the spectator into a never-before-seen world of natural wonder and staggering beauty. “For the first time, we will be able to watch a rain forest growing before our eyes…Only cinema can offer this unique voyage into a completely untamed universe, a world of perfect balance in which each living thing – from the smallest to the largest – plays an essential role. The film will deliver a complete sensory immersion in the primaeval splendor of one of nature’s richest mysteries, inviting the audience to enter, discover and marvel at a universe of untold treasures while joining its voice to the ever-growing awareness of the need to preserve our world.”

Every year, thousands of Antarctica's emperor penguins make an astonishing journey to breed their young. They walk, marching day and night in single file 70 miles into the darkest, driest and coldest continent on Earth. This amazing, true-life tale is touched with humour and alive with thrills. Breathtaking photography captures the transcendent beauty and staggering drama of devoted parent penguins who, in the fierce polar winter, take turns guarding their egg and trekking to the ocean in search of food. Predators hunt them, storms lash them. But the safety of their adorable chicks makes it all worthwhile. So follow the leader... to adventure!!

2007 film by Luc Jacquet