To describe all the beautiful footage in this documentary is simply not possible. It's easily the best i have ever seen, even better than BBCs "planet earth" which was unique because of its big budget and extended production time (16M £, 5years). It's probable that production paid off in terms of skill and it certainly comes to show here in BBCs next effort when the mysteries and beauty of our planets frozen worlds is on the agenda.

More than anything else this production is a profound statement on how precious and unique our planet is and how immensely important it is that human impact on fragile ecosystems is kept to a minimum.

Richard Attenbourough is, as we all know by now, the perfect narrator. His deep interest and knowledge in natural history is apparent, adding a pleasant edge to this marvelous achievement.