Bermuda Triangle: The Deadly Secrets

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.

The grasslands of Africa are a banquet spread for feline predators. Explore the hunting and nurturing habits of lions, leopards, and cheetahs of the African savannah, as well as the overlooked grasses that lay the foundation for the amazing array of wildlife flourishing among its leaves.

This documentary examines the threatened habitats and the three great predators: the jaguar, the leopard and the cheetah, of the great South American jungle, the Masai Mara grasslands of Kenya and the bushland of South Africa.

A dive inside a wild land where nature hides some of her greatest secrets: The Alps. Steep slopes, wind swept cutting edge rocks. An air desperately lacking of oxygen. A biting cold. How do living beings adapt to those extreme conditions?

National Geographic : Le Royaume de l'ours polaire

Alone, 180 Days on Baikal Lake

Follow leading scientists around the world and to the edge of the universe on their quest to solve one of the greatest mysteries of the universe, the mysterious invisible “dark matter.”

A group of scientists are thinking outside the box for ways to reverse the effects of global warming. And who better to save the earth than National Geographic Channel's host of the World's Toughest Fixes, Sean Riley? He'll join these experts in the labs and in the field to see what wacky new technologies are being developed, like sending mirrors into space and reducing the greenhouse emissions chickens produce.

In 2009 a team of British cavers went on an expedition deep within the jungle of central Vietnam. To their amazement they discovered an enormous cave which they believe to be the biggest in the world. The team, the first humans ever to enter the cave, traveled 6 kilometers underground until their way was blocked by a gigantic rock face they dubbed 'The Great Wall of Vietnam'. Now they have returned, but this time with the right equipment to climb the wall and with a geologist and zoologist to discover if this is indeed the Biggest Cave in the World and what secrets lie deep within?

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

The Scorpions belong to the oldest land-based arachnides with over 1800 different species known to exist. Usually, they do not surpass the size of 10cm in length, but exceptions are know, such as the Emperor Scorpion (Pandinus imperator) which can grow up to become over 20cm in size. Scorpions are mostly active at night and hide away during the day. Take a look into the live of these amazing creatures!

See the world's first MRI scan of a great white shark as Ultimate Shark reveals the extreme engineering and predatory abilities of one of nature's most near perfect predators. Hear firsthand accounts of people who survived harrowing encounters, including a surfer who was bitten on the arm and leg, towed by the surfboard ankle strap and miraculously escaped only with minor injuries. National Geographic demystifies the true motives and power behind their behavior.

Peter Gimbel and a team of photographers set out on an expedition to find and film, for the very first time, Carcharodon carcharias—the Great White Shark. The expedition lasted over nine months and took the team from Durban, South Africa, across the Indian Ocean, and finally to southern Australia.

Así sembramos nuestra agua

BBC The Natural World. In 2004, a team from the Planet Earth series captured the first ever film of a wild snow leopard in the mountains of Pakistan. For Nisar Malik, who led the expedition, these images sparked a passion that compelled him to return. With cameraman Mark Smith, he spent two years documenting the snow leopard's daily life, finally lifting the veil on the most elusive of all cats.

This film shows how far we have come since the cold-war days of the 50s and 60s. Back then the Russians were our "enemies". And to them the Americans were their "enemies" who couldn't be trusted. Somewhere in all this a young girl in Oklahoma named Shannon set her sights on becoming one of those space explorers, even though she was told "girls can't do that." But she did.

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.

In Dark Green we follow conservationist and storyteller Paul Rosolie deep into the jungle of the Amazon, risking his life to learn more on this last remaining wilderness on earth.

Bermuda Triangle Exposed’ explores the most deadly and unexplained marine graveyard on Earth. It spans from Bermuda to Miami to Puerto Rico; from 8,500 metres below the surface of the sea to 8,500 metres into the sky. For decades it has held us baffled as it defies explanation. Some 2000 boats and 75 planes have disappeared without a trace here. Freak waves, magnetic anomalies, giant whirlpools and strange fireballs have all been blamed for the unusual disappearances. See whether we will ever determine truth behind the mystery of the Bermuda Triangle as this programme investigates what is beneath the infamous stretch of ocean.

Many geneticists and archaeologists have long surmised that human life began in Africa. Dr. Spencer Wells, one of a group of scientists studying the origin of human life, offers evidence and theories to support such a thesis in this PBS special. He claims that Africa was populated by only a few thousand people that some deserted their homeland in a conquest that has resulted in global domination.