Trek into the hidden battlefields of northern Botswana where lions and spotted hyenas clash in overlapping territories. With never-before-seen footage, much of it filmed at night, you'll uncover an intense and vicious blood feud that has been waged for millennia. Follow the Southern Clan, led by a powerful hyena matriarch whose firstborn female cub kills her sister at birth to assure her succession as leader of the clan. Lurk in the shadows as a lioness from the Central Pride gives birth to three cubs and then encounters a deadly Egyptian cobra. You'll be stunned by breathtaking chase scenes as the hyena matriarch is brutally killed by a male lion, throwing the clan into chaos. Discover nature's savage conflicts in this ancient rivalry.

Where there are humans, are also ravens and crows. No animal knows us better.

It is one of the most controversial issues of our day, jeopardizing the health and smearing the reputations of Olympians, professional sports players and even high school athletes. The government has declared them illegal without a prescription, athletes call them unfair, and some doctors say they are potentially deadly. What are the real dangers of these drugs? We've seen what's happening outside the body; now NGC reveals what's happening inside the body, in the Science of Steroids.

A documentary of insect life in meadows and ponds, using incredible close-ups, slow motion, and time-lapse photography. It includes bees collecting nectar, ladybugs eating mites, snails mating, spiders wrapping their catch, a scarab beetle relentlessly pushing its ball of dung uphill, endless lines of caterpillars, an underwater spider creating an air bubble to live in, and a mosquito hatching.

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.

Tasmania lies on the Australian continent, but is a world apart. It is home to an extraordinary cast of black devils and white wallabies. Trees here tower to one hundred metres and green lights dance in the southern sky. As the last landfall heading south before Antarctica, Tasmania's isolation, cooler climate and distinct seasons influence everything.

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!!

Mountain Gorilla takes us to a remote range of volcanic mountains in Africa, described by those who have been there as ""one of the most beautiful places in the world"", and home to the few hundred remaining mountain gorillas. In spending a day with a gorilla family in the mountain forest, audiences will be captivated by these intelligent and curious animals, as they eat, sleep, play and interact with each other. Although gorillas have been much-maligned in our popular culture, viewers will finally ""meet the legend"" face to face, and learn about their uncertain future.

Is there a connection between animal sounds and the music that humans create? Using a surprising and wide variety of evidence from the animal kingdom -- including the humpback whale, the lyre bird, the siamang gibbon and the great reed warbler -- Sir David Attenborough seeks to prove that the origions of music lie in territory, emotion and sex.

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?

Deep Blue is a major documentary feature film shot by the BBC Natural History Unit. An epic cinematic rollercoaster ride for all ages, Deep Blue uses amazing footage to tell us the story of our oceans and the life they support.

A journey into the land of sharks. The old myth of swimming killing machines is put against the true nature of those rather peaceful hunters, whose evolution ended in biological perfection millions of years ago. We accompany expeditions of Dr. Eugenie Clark and Rodney Fox, who have studied sharks since the 1950's.

A journey to seven of the most geographically dynamic locations on earth. The film features spectacular land forms, diverse wildlife and the people and cultures indigenous to these places. Distinct geographic places include the great island of Madagascar, home to unique limestone pinnacles and the playful lemur; and the greatest desert—the Namib—home of the largest sand dunes in the world that tower majestically over its western border, the Atlantic Ocean. Other locations featured are the great icecap of Greenland, Iguazu Falls in Brazil, the Okavango Delta in Botswana, the Chang Tang Plateau in Tibet, and the Amazon River in South America.

An underwater exploration beneath kelp forests in the Pacific Ocean off the coast of Southern California. The film captures the birth of a shark, squids mating, a lobster molting, a fish protecting its nest from an octopus and a sea urchin, and the sea bed covered with brittle stars.

This special edition video features some of the most dangerous adventures and incredible crocodile captures that Steve and Terri Irwin have ever made.

In this immersive documentary, Winston Stairs invites the audience on a soul-soothing expedition into the world of hiking. Winston’s adventurous spirit guides the viewer through the forests of Ontario, sharing in the enchanting beauty of nature. Through breathtaking landscapes and personal reflections, the film captures Winston's profound love for hiking as more than a mere pastime—it becomes a transformative experience that welcomes self-discovery and a strong relationship with our environment. Join Winston on this inspirational trek, where every step reflects the joys of exploring and the tranquil side of our planet.

We have volunteered for the Earth Conservation Corps to restore the Anacostia river and the Washington wasteland where we live and often meet an early violent death. We are striving to return our nation's bird,the bald eagle, to our Nation's Capitol. If the eagles survive maybe we can too. We began filming this documentary in 1992 to show people our America. "Endangered Species" is our story. - Written by Antoine Woods

Explorers and amateur directors Mariana Ianovska and Viktor Posnov embark on a 40 day long trip across Umnak Island.