New Zealand's changing fortunes and how its wildlife evolved.

Extreme isolation protects and transforms New Zealand's ancient native creatures.

The ways that New Zealand's ingenious wildlife have adapted to survive.

Untouched since the dawn of time, evolution in New Zealand is responsible for some of the rarest and most unusual wildlife on Earth.

Untouched since the dawn of time, evolution in New Zealand is responsible for some of the rarest and most unusual wildlife on Earth.

Untouched since the dawn of time, evolution in New Zealand is responsible for some of the rarest and most unusual wildlife on Earth.

Untouched since the dawn of time, evolution in New Zealand is responsible for some of the rarest and most unusual wildlife on Earth.

Untouched since the dawn of time, evolution in New Zealand is responsible for some of the rarest and most unusual wildlife on Earth.

Untouched since the dawn of time, evolution in New Zealand is responsible for some of the rarest and most unusual wildlife on Earth.

At just 14 years old, when most boys his age would probably rather be riding bikes and playing video games, Jack Randall left his home in England to become an apprentice to "The Crocodile Hunter" Steve Irwin, learning to handle snakes and other reptiles. Today, Randall continues his research into exotic, endangered and iconic animal species by venturing into some of the most unforgiving environments on the planet. With no creature deemed too creepy or dangerous to handle, Randall faces down deadly crocodiles, unpredictable pythons, endangered green turtles, feral camels, venomous snakes, wild kangaroos and more.

From the Arctic Ocean and its isolated Islands to the bleak, barren tundra and frozen forests of the taiga, the Arctic region is locked in ice for more than half of the year; in summer, this land of contrast bursts into life.

Beyond the battle scars and the fortifications from decades of conflict, South Korea still boasts areas of great wilderness with intriguing animals, some of which share extraordinary relationships with humankind.

Exploring the wild animals and landscapes of New Zealand.

The hidden beauty of the national parks of the United States.

Following Botswana's most iconic and charismatic creatures as they look to mate and bring up a family in a world full of dangers.

From the frozen tundra in the north to the dry forests of the equator, Sir David Attenborough narrates a compelling view of the planet. "Planet Earth" was the first natural history documentary to be filmed in high definition, and now a decade later improved technology has made it possible to capture further details, from elusive animal behaviors to previously inaccessible remote landscapes. In addition to exploring the wilderness, the series examines urban dwellings, focusing on animals that have adapted to city life.

Animal rescue centers who rescue, care and rehabilitate sick, injured and orphaned wildlife.