Steve Irwin: Ocean's Deadliest Catch

How did humanity's earliest ancestors evolve into one of the most successful species on Earth? An extraordinary journey tracing the footsteps of early hominids. Using the latest paleoanthropological findings mixed with the latest CGI from Square Enix, this story is finally told.

In the northern hemisphere, snow is produced by atmospheric low pressure areas that move in from the western Atlantic in the form of huge cloud masses. Snow is vital to the balance of mountain ecosystems. Many animal and plant species at high altitudes depend on it for their survival. But due to global warming, snow is falling less and less. Will there be no more snow in the future? In the Alps and eastern US the situation is clear: as temperatures rise, snow falls less and less, and snow periods tend to shorten. This threatens the mountain flora and fauna. What future do the marmots or alpine bells have without a heat-insulating layer of snow? What future do the marmots or alpine bells have without a heat-insulating layer of snow? What will happen to the conifers in North America without the annual frost protection? Research teams are looking at the implications for snow-adapted species. The documentation shows animal mountain dwellers, who hope for the long-awaited snow every winter.

Documentary series uncovering the secret lives of big cats, using the latest technology and scientific research to bring these animal superstars out of the shadows.

The Amazon is one of the wildest and least explored parts of the planet. Encompassing 6 countries and 2 million square miles of forest, river and floodplain, it has the highest diversity of life on the planet, but what lies below it is truly shocking. In its deep muddy rivers, clear streams and expansive floodplains a freak-show of fish life has exploded, with some of the strangest shapes and weirdest adaptations on Earth. Hiding in the vast rivers and streams is an electric grid, a bizarre community of fish with a highly sophisticated electric sixth sense. Using electricity, these "Super" fish can communicate wirelessly, control each other remotely and emit shocks that can stop a human heart. This cryptic world has mystified scientists throughout the ages. Now an intrepid scientist, Will Crampton ventures back into the dark jungles where the inspiration for our technology driven world first emerged, in an attempt to unravel their secrets and unlock the electric code.

Embark to Niagara Falls and witness its stunning beauty and a wide variety of wildlife—mammals, birds, and reptiles. Through the eyes of passionate scientists, uncover a complex world forged by stone and powered by water.

An examination of the extinction threat faced by frogs, which have hopped on Earth for some 250 million years and are a crucial cog in the ecosystem. Scientists believe they've pinpointed a cause for the loss of many of the amphibians: the chytrid fungus, which flourishes in high altitudes. Unfortunately, they don't know how to combat it. Included: an isolated forest in Panama that has yet to be touched by the fungus, thus enabling frogs to live and thrive as they have for eons.

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!!

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.

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?

The world's most pristine and least understood ocean, the Arctic, is under threat from chemical pollutants, plastics and climate change. In the northern regions of Norway, Canada and Russia, you can see evidence of steadily warming Atlantic waters moving further north. This film explores the impact these waters are having on the diversity of organisms and ecosystems that are unique to the Arctic.