Two journalists traverse the Grand Canyon by foot, hoping this 750-mile walk will help them better understand one of America's most revered landscapes and the threats poised to alter it forever.

Once upon a time, there was a pedunculate oak (Quercus robur), born in 1810, 210 years old and a pillar in its kingdom. This spectacular adventure features an extraordinary cast: squirrels, barnacles, jays, ants, field mice... This vibrant, whirring, marvelous little world seals its destiny around the majestic tree that welcomes them, feeds them and protects them from its roots to its crown. A poetic ode to life, in which nature alone expresses itself.

The largest predator on the planet, the sperm whale, is your host for an amazing exploration of the final frontier – the world at the bottom of the ocean. From the makers of the Walking With series comes this incredible marine tour, in which you'll witness a rarely seen world of hidden mountain ranges, majestic canyons, volcanoes and the beautiful and often deadly creatures that inhabit the deep sea.

Ocean Voyagers explores the familiar themes of motherhood and parenting in a world as unfamiliar as it is breathtaking. Featuring a precocious newborn humpback calf and his enormous 40 ton mother, we are taken on a journey of discovery into their world.

A scientist explains how the savagery and efficiency of the insect world could result in their taking over the world.

Ocean Oasis is a fascinating journey into the bountiful seas and pristine deserts of two remarkably different, but inextricably linked worlds — Mexico's Sea of Cortés and the Baja California desert.

Explore the extraordinary hidden world of insects, where a leaf weighs more than a car, rain drops feel like exploding hand grenades and a blade of grass soars like a skyscraper. Shot on location in the Borneo rainforest, Bugs! brings the beautiful and dangerous universe of its tiny stars up close and personal with cutting-edge technology that magnifies them up to 250,000 times their normal size.

This large format film explores the last great wilderness on earth. It takes you to the coldest, driest, windiest continent, Antarctica. The film explores the life in Antarctica, both for the animals that live their and the scientist that work there.

Bas Jan Ader hangs from the branch of a tall tree, until he loses his grip and falls into a river below.

People go and search for the legendary Bigfoot creature.

Take a trip with the filmmakers to Scotland, to the Highlands, rich in flora and fauna. It's also the perfect place to make Scotland's most popular drink - whisky. The film begins at the end of winter and follows the changes the area undergoes over the course of the year.

Two otter pups have been carefully watched over by their mother for a year, but her tireless work will soon come to an end. From here on the pups will have to fend for themselves, one day maybe starting an otter family of their own.

David Attenborough narrates the charming and fascinating story of some real-life animal romantics. There are show-offs and singers, dancers and fighters, stories of undercover affairs and heartwarming devotion. These include a male polar bear that plays hard to get, a lemur whose odour bags him a mate and a lizard who is tender and faithful to the very end. It reveals that animals can be loving, complex, funny and inventive - it is all part of the mating game.

Some 150 wild horses live in an expanse of desert, grassland and rock along Namibia’s west coast - a ‘Forbidden Zone’ rife with ghost towns.

Etienne-Jules Marey, a French inventor who turned a gun into a camera. A hand-drawn hunter whose weapon, instead of firing ammunition, shoots photographs. Carlos, a Mexican wildlife photographer who used to be a real life hunter until he chose to get rid of all his guns. All come together in this poetic yet approachable animated documentary short film.

Hand processed expired Kodak 7291, Camera: Beaulieu R16, Lens: Angenieux 12-120mm with +3 Diopter, Polarising filter for the clouds. Hand processed in C-41 chem using a Lomo UPB-1A tank. Still haven't mastered removal of the rem-jet anti-halation layer (thats all the white 'static' on the film). The film expired about 40 years ago.

Structural study of a tree. Light, water and air coax it out of the soil in a manner foregrounding time’s relativity to different forms of life on Earth. Made the day my brother got his fork-lift license.

On Zambia's Liuwa Plain two star-crossed spotted hyena cubs are born to warring rival clans: Twaambo, a male cub and Nasanta, a female, are destined to lead converging lives as their extreme environment forces them together