Smoky Mountain Park Rangers

A journey into the hidden world of the Netherlands, beneath the water's surface, where extraordinary creatures inhabit a wondrous habitat. Thirty years ago, filming there would have been unthinkable: the polluted, murky waters were devoid of life. Now, the many efforts to protect the environment are paying off...

Follows the story of "Grizzly Man" Timothy Treadwell and what the thirteen summers in a National Park in Alaska were like in his attempt to protect the grizzly bears. The film is full of unique images and a look into the spirit of a man who sacrificed himself for nature.

Told by an old Sagauro cactus, of the many guests which live in its "hotel," from ants to owls nestling in its bark and unlikely co-habitants such as a rattle snake and next door, protected by a barrier of thorn balls, a desert rat.

For more than 20 years, Maurice & Katia Krafft have traveled the world. From Iceland to Hawaii, from Africa to Indonesia, they are usually the first to reach the scene of an eruption. Join them as they risk their lives to document the birth of a volcano.

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!!

A compilation episode of the wildlife documentary series presented by David Attenborough, uncovering the secrets of animals across the globe.

A documentary on Al Gore's campaign to make the issue of global warming a recognized problem worldwide.

This Traveltalk short visits Rocky Mountain National Park and a nearby dude ranch in Colorado.

Blue Whales: Return of the Giants 3D takes viewers on a journey of a lifetime to explore the world of the magnificent blue whale, a species rebounding from the brink of extinction. Following two scientific expeditions—one to find a missing population of blues off the exotic Seychelles Islands, the other to chronicle whale families in Mexico’s stunning Gulf of California—the film is an inspirational story that transforms our understanding of the largest animal ever to have lived.

ITV Naturalist Nigel Marven stars in this drama-documentary in which he explores his own back garden, in all its intricate detail. Shrunk to the size of an ant, he and his two companions - technical assistant Laura Green (Sarah Matravers) and driver Doug Kruger (Robin Lawrence) - embark on a mission to cross Nigel's back garden in just 24 hours. Along the way they meet some of the many thousands of creatures that fight for survival every day in these urban jungles .

Lake Tanganyika is an 'Ocean' in Africa. Millions of years ago it was colonized by a little fish called 'Cichlid'. Otters, crocodiles, cobras and cormorants all hunt the fish in clear water. How the Cichlid survived and evolved is an incredible story for, millions of years later, there are over 200 new species - all found only in Lake Tanganyika. Incredibly, they have evolved to look like coral reef fish. There are cichlid equivalents of tuna, snapper, gobies and goatfish. They have evolved bizarre methods of breeding with mouth-incubation, lekking and, unique amongst fish, there is even a cuckoo. Despite all their specialization over millions of years, if an opportunity presents itself, the little fish can behave like their unspecialized ancestor. In the climax of the film, they bang together to feast on a hatch of sardine fry. This is the story of how one little fish has conquered a lake.

In Africa there is a fable that explains the creation of the tides. When a hyaena challenged a mudskipper to a drinking contest to decide who should own the shore, the god Mungu tilted the earth so the sea flowed inland, and neither could win.

National Geographic filmmakers, Dereck and Beverly Joubert, explore how some animals are thrust together by the forces of nature-sometimes through a millennium of evolution or even last year’s drought. In the aftermath of strange elephant deaths, they piece together a visually stunning story that confirms their theory that lions were hunting elephants. Narrated by Jeremy Irons.

Kerkini: The Bird Sanctuary

Go to the Big Island and hover above erupting craters at Hawaii Volcanoes National Park, watch flowing orange lava ooze across charred rock and steam billow from the Pu'u 'O'o Vent. Glide over Maui's Haleakala National Park and discover the diversity of Hawaiian landscapes. Island hop to Lanai for spectacular beaches. Visit Pearl Harbor from above and the memorial sites before exploring the rest of Oahu. Narrated by Tom Skerritt

A young couple battle entrenched tradition and hostile forces to bet on nature for the future of their failing, four-hundred-year-old estate. Ripping down the fences, they set the land back to the wild and entrust its recovery to a motley mix of animals both tame and wild, beginning a grand experiment.

The earliest home of life on Earth was probably in the warm shallows of the ocean...

Snow blankets the trees and green lights dance in a star-filled sky. For a brief time during the festive season, our thoughts turn to a winter wonderland, far to the north. It’s a place best known to outsiders as Lapland, the magical home of Santa Claus. But far from the festive lights, Santa’s home is even more enchanting than you may realise.

By land, by air, and by sea, viewers can now experience the struggle that millions of creatures endure in the name of migration as wildlife photographers show just how deeply survival instincts have become ingrained into to the animals of planet Earth. From the monarch butterflies that swarm the highlands of Mexico to the birds who navigate by the stars and the millions of red crabs who make the perilous land journey across Christmas Island, this release offers a look at animal instinct in it's purest form.

Florida is home to beaches, coral reefs, pine forests and the famous Everglades wetland, but a growing human population and abandoned exotic pets like pythons are threatening this wild paradise. Can Florida’s ecosystems continue to weather the storm?