Season 1

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  9.0/104,382 votes

  From Pole to Pole

  Season 1 Episode 1 - Aired 3/5/2006

  A global tour examining the behaviors of animals and revealing the effects of climate change on their environments.

  Director: Unknown

  Writer: David Attenborough, Alastair Fothergill, Gary Parker

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  8.8/103,770 votes

  Mountains

  Season 1 Episode 2 - Aired 3/12/2006

  An exploration of the world's major mountain ranges and the habitats they create.

  Director: Alastair Fothergill

  Writer: Vanessa Berlowitz, David Attenborough, Gary Parker

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  8.8/103,459 votes

  Fresh Water

  Season 1 Episode 3 - Aired 3/19/2006

  Although merely 3% of water on earth, fresh water plays an important part in the planet's weather and erosion. It is immensely important for all non-marine wildlife, which drinks fresh water and swims, procreates, hunts in it. Its concentrations, such as rivers, lakes and swamps, abound in aquatic and other species, often adapted to 'wet' life.

  Director: Alastair Fothergill

  Writer: David Attenborough

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  8.7/103,348 votes

  Caves

  Season 1 Episode 4 - Aired 3/26/2006

  Although often overlooked, caves are remarkable habitats with bizarre wildlife. Explore the structures created inside the earth as well as the adaptations animals have made to thrive in these environments.

  Director: Alastair Fothergill

  Writer: David Attenborough

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  8.6/103,186 votes

  Deserts

  Season 1 Episode 5 - Aired 4/2/2006

  Despite the lack of rain, deserts are the most varied of our ecosystems. In fact, about thirty percent of the earth's land surface is covered in desert. Explore the unique conditions present in deserts as well as the survival mechanisms developed by the animals that inhabit them.

  Director: Alastair Fothergill

  Writer: David Attenborough

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  8.9/103,132 votes

  Ice Worlds

  Season 1 Episode 6 - Aired 11/5/2006

  Experience life in the most hostile corners of the planet by exploring the terrain, seasons, and animals of the Arctic and Antarctic.

  Director: Alastair Fothergill

  Writer: Unknown

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  8.6/102,948 votes

  Great Plains

  Season 1 Episode 7 - Aired 11/12/2006

  This episode deals with savanna, steppe, tundra, prairie, and looks at the importance and resilience of grasses in such treeless ecosystems. Their vast expanses contain the largest concentration of animal life. Over Africa's savanna, a swarm of 1.5 billion red-billed queleas are caught on camera, the largest flock of birds ever depicted.

  Director: Alastair Fothergill

  Writer: Unknown

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  8.9/103,033 votes

  Jungles

  Season 1 Episode 8 - Aired 11/19/2006

  Jungles cover roughly three percent of our planet yet contain fifty percent of the world's species. Experience the countless flora and fauna that inhabit these unique areas.

  Director: Alastair Fothergill

  Writer: Unknown

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  8.8/102,904 votes

  Shallow Seas

  Season 1 Episode 9 - Aired 11/26/2006

  A look at the shallow seas of the earth, from coral reefs to kelp forests and beyond.

  Director: Alastair Fothergill

  Writer: Unknown

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  8.8/102,796 votes

  Seasonal Forests

  Season 1 Episode 10 - Aired 12/3/2006

  Trees are Earth's largest organisms and are also one of the planet's oldest inhabitants. Seasonal forests (unlike tropical rain-forest) are the largest land habitats. A third of all trees grow in the endless taiga of the Arctic north. Northern America has forests that include California's sequoias, the Earth's largest trees. There and elsewhere, their vast production of photosynthesis and shade presides over a seasonal cycle of life and involves countless plant and animal species.

  Director: Alastair Fothergill

  Writer: Unknown

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  8.9/102,881 votes

  Ocean Deep

  Season 1 Episode 11 - Aired 12/10/2006

  An exploration of the deepest, darkest realms of the ocean, spanning countless species to a depth of 2,000 meters.

  Director: Alastair Fothergill

  Writer: Gary Parker