Planet Earth

As of its release in early 2007, Planet Earth is quite simply the greatest nature/wildlife series ever produced. Following the similarly monumental achievement of The Blue Planet: Seas of Life, this astonishing 11-part BBC series is brilliantly narrated by Sir David Attenborough and sensibly organized so that each 50-minute episode covers a specific geographical region and/or wildlife habitat (mountains, caves, deserts, shallow seas, seasonal forests, etc.) until the entire planet has been magnificently represented by the most astonishing sights and sounds you'll ever experience from the comforts of home. The premiere episode, "From Pole to Pole," serves as a primer for things to come, placing the entire series in proper context and giving a general overview of what to expect from each individual episode. Without being overtly political, the series maintains a consistent and subtle emphasis on the urgent need for ongoing conservation, best illustrated by the plight of polar bears whose very behavior is changing (to accommodate life-threatening changes in their fast-melting habitat) in the wake of global warming--a phenomenon that this series appropriately presents as scientific fact. With this harsh reality as subtext, the series proceeds to accentuate the positive, delivering a seemingly endless variety of natural wonders, from the spectacular mating displays of New Guinea's various birds of paradise to a rare encounter with Siberia's nearly-extinct Amur Leopards, of which only 30 remain in the wild.

That's just a hint of the marvels on display. Accompanied by majestic orchestral scores by George Fenton, every episode is packed with images so beautiful or so forcefully impressive (and so perfectly photographed by the BBC's tenacious high-definition camera crews) that you'll be rendered speechless by the splendor of it all. You'll see a seal struggling to out-maneuver a Great White Shark; swimming macaques in the Ganges delta; massive flocks of snow geese numbering in the hundreds of thousands; an awesome night-vision sequence of lions attacking an elephant; the Colugo (or "flying lemur"--not really a lemur!) of the Philippines; a hunting alliance of fish and snakes on Indonesia's magnificent coral reef; the bioluminescent "vampire squid" of the deep oceans... these are just a few of countless highlights, masterfully filmed from every conceivable angle, with frequent use of super-slow-motion and amazing motion-controlled time-lapse cinematography, and narrated by Sir Attenborough with his trademark combination of observational wit and informative authority. The result is a hugely entertaining series that doesn't flinch from the predatory realities of nature (death is a constant presence, without being off-putting).

At a time when the multiple threats of global warming should be obvious to all, let's give Sir David the last word, from the closing of Planet Earth's final episode: "We can now destroy or we can cherish--the choice is ours." --Jeff Shannon

### From Pole to Pole

The ultimate portrait of our planet looks at the key factors that shape our natural history. The sun and fresh water dominate the lives of all animals and plants on Earth and trigger seasonal migrations, small and large.

In the Arctic spring, a mother polar bear and cubs emerge from their winter den. They have just two weeks to cross the frozen sea before it melts and they become stranded. Share the most intimate and complete picture of polar bear life ever filmed.

For more than three years, time-lapse cameras captured the annual transformation created by the Okavango floods. The latest technology and aerial photography enables us to track some of the greatest mass migrations, following prey and predators on truly epic journeys.

### Mountains

Welcome to an extreme landscape of rock, ice and snow. We tour the mightiest mountain ranges, starting with the birth of a mountain at one of the lowest places on Earth and ending at the summit of Everest. Find out how some of the most secretive animals rise to the challenge of mountain life.

Share one of Earth's rarest phenomena, a lava lake that has been erupting for over 100 years. The same forces built the Simian Mountains where we find troops of gelada baboons nearly a thousand strong. In the Rockies, grizzlies build winter dens inside avalanche-prone slopes and climb the peaks to devour abundant summer moths. In another world first, the programme brings us astounding images of a snow leopard hunting on the Pakistan peaks.

### Freshwater

Fresh water is our most precious resource and it defines the distribution of life on land. Follow the descent of rivers from their mountain sources to the sea. Watch spectacular waterfalls, fly inside the Grand Canyon and explore the wildlife below the ice in the world's deepest lake.

Witness unique and dramatic moments of animal behaviour: a showdown between smooth-coated otters and mugger crocodiles; deep-diving long tailed macaques; massive flocks of snow geese on the wing and a piranha frenzy in the perilous waters of the world's largest wetland.

### Caves

The Cave of Swallows in Mexico is a 400m vertical shaft, deep enough to engulf the Empire State Building. The Lechuguilla cave system in the USA is 193km long and 500m deep with astonishing crystal formations hanging from its chambers.

Although often overlooked, caves are remarkable habitats with equally bizarre wildlife. Cave angel fish cling to the walls behind cave waterfalls with microscopic hooks on their flattened fins. Cave swiftlets navigate by echo-location and build nests out of saliva. The Texas cave salamander has neither eyes nor pigment. Unique access to a hidden world of stalactites, stalagmites, snotites and troglodytes brings a wealth of surprises.

### Deserts

Around 30% of the land's surface is desert, the most varied of our ecosystems despite the lack of rain. Unravel the secrets of desert survival and experience the ephemeral nature of this dynamic environment. Watch Saharan sandstorms nearly a mile high and desert rivers that run for a single day.

In the Gobi Desert, rare Bactrian camels get moisture from the snow. In the Atacama, guanacos survive by licking dew off cactus spines. In the USA, the brief blooming of Death Valley triggers a plague of locusts 65km wide and 160km long. A unique aerial voyage over the Namibian desert reveals elephants on a long trek for food and desert lions searching for wandering oryx.

### Ice Worlds

The Arctic and Antarctic experience the most extreme seasons on Earth. Time-lapse cameras watch a colony of emperor penguins, transforming them into a single organism. The film reveals new science about the dynamics of emperor penguin behaviour.

In the north, unique aerial images show a polar bear swimming more than 100km. Diving for up to two minutes at a time. The exhausted polar bear later attacks a herd of walrus in a true clash of the Titans.

### Great Plains

After filming for three years, Planet Earth finally captures the shy Mongolian gazelle. Only a handful of people have witnessed its annual migration. Don't miss the bizarre-looking Tibetan fox, captured on film for the first time.

Over six weeks the team follow a pride of 30 lions as they attempt to hunt elephants. Using the latest night vision equipment, the crew film the chaotic battles that ensue at close quarters.

### Jungles

Jungles cover roughly three per cent of our planet yet contain 50 per cent of the world's species. High-definition cameras enable unprecedented views of animals living on the dark jungle floor.

In the Ngogo forest the largest chimpanzee group in the world defends its territory from neighbouring groups. Other jungle specialists include parasitic fungi which infiltrate an insect host, feed on it, and then burst out of its body.

### Shallow Seas

A humpback whale mother and calf embark on an epic journey from tropical coral paradises to storm ravaged polar seas.

Newly discovered coral reefs in Indonesia reveal head-butting pygmy seahorses, flashing 'electric' clams and bands of sea kraits, 30-strong, which hunt in packs. Elsewhere plagues of sea urchins fell forests of giant kelp. Huge bull fur seals attack king penguins, who despite their weight disadvantage, put up a spirited defence.

### Seasonal Forests

The Taiga forest, on the edge of the Arctic, is a silent world of stunted conifers. The trees may be small but filming from the air reveals its true scale. A third of all trees on Earth grow here and during the short summer they produce enough oxygen to change the atmosphere.

In California General Sherman, a giant sequoia, is the largest living thing on the planet, ten times the size of a blue whale. The oldest organisms alive are bristlecone pines. At more than 4,000 years old they pre-date the pyramids. But the baobab forests of Madagascar are perhaps the strangest of all.

### Ocean Deep

Life goes to extraordinary lengths to survive this immense realm. A 30 tonne whale shark gorges on a school of fish and the unique overhead heli-gimbal camera reveals common dolphins rocketing at more than 30km an hour.

Descending into the abyss, deep sea octopus fly with wings and vampire squid use bioluminescence to create an extraordinary colour display. The first ever time-lapse footage taken from 2,000m down captures eels, crabs and giant isopods eating a carcass, completely consuming it within three hours.