An epic journey through the oceanic kingdom of the Atlantic Salmon in an attempt to unravel the mystery of their life at sea. Salmon are plummeting to critical levels. The cause is mortality at sea. For the 1st time, using the latest DNA technology, scientists are tracking the salmon from the rivers into the vast North Atlantic and back again, in hopes of finding an answer before it's too late.

Takes us to locations all around the US and shows us the heavy toll that modern technology is having on humans and the earth. The visual tone poem contains neither dialogue nor a vocalized narration: its tone is set by the juxtaposition of images and the exceptional music by Philip Glass.

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.

Although first glance reveals little more than stones and sand, the desert is alive. Witness moving rocks, spitting mud pots, gorgeous flowers and the never-ending battle for survival between desert creatures of every shape, size and description.

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

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 biggest tech revolution of the 21st century isn’t digital, it’s biological. A breakthrough called CRISPR gives us unprecedented control over the basic building blocks of life. It opens the door to curing disease, reshaping the biosphere, and designing our own children. This documentary is a provocative exploration of CRISPR’s far-reaching implications, through the eyes of the scientists who discovered it, the families it’s affecting, and the genetic engineers who are testing its limits.

Take a spectacular journey. It starts right here... Explore a strange and mysterious world. Explore the LAND OF THE TIGER. A rare and fascinating study of the enormous jungle cats, LAND OF THE TIGER features spectacular footage of tigers stalking their prey, caring for their young, swimming, playing... and fighting- as well as glimpses of the other animals with which the tiger shares its domain. Come as close as you dare to these wild cats in all their royal splendor as you and National Geographic journey deep into the LAND OF THE TIGER.

A walk in the woods become a metaphoric journey in Chloé Leriche's short film. As a solitary figure moves through the forest, the texture of stone, the movement of water, all the infinite pageantry of the natural world is captured in its richness and detail. With the help of an orchestrated soundscape and composed cinematography, Blue Suns catches the miracle and mystery of this world as it unfolds.

During lockdown, Telmo Esnal recovered a long-forgotten project: 'UR', a tale by Pablo Azkue taking a deep look at the conscience and the sea. 'Urtzen' is a special cinematic essay, a curious collage which, recycling and reusing dialogues, images and music, reflects on existence.

Wild tigress, Machli, is one of three sisters raised in India's Ranthambore National Park. Their mother, "The Lady of the Lakes," ruled the lakeside territory, until Machli rose up and took possession of her mother's throne.

The compelling story of one of the most successful mountain gorillas that has ever lived - a huge silverback called Titus. The programme starts in 1967, when the researcher Dian Fossey first made contact with a group of mountain gorillas in Rwanda. She opened up a window on to their secret lives. Forty years on, this film reveals the complete and dramatic life story of one individual animal. Titus's father was murdered by poachers in front of his very eyes. His mother abandoned him in the subsequent chaos. His family disintegrated. He should have died. But we reveal how Titus survived against all the odds. Titus's present day trials and tribulations take the viewer back in time to reveal key moments in Titus's history. Using testament from eyewitnesses, the film relives one individual mountain gorilla's extraordinary battle for survival.

There are few places on earth more forbidding and beautiful than Baja, Mexico. 800 miles long and 10 million years in the making, it is home to a punishing desert and the most diverse sea on the planet. Explore amazing ecosystems in the Sea of Cortez and join the hunt with charismatic mega fauna - great creatures that inspire wonder, joy, fear, and awe. From Emmy-nominated producer Michael Watchulonis and Emmy award winning cinematographer Johnny Friday. Captured entirely in 4K over a period of 4 years.

They are giants—stretching more than 300 feet above the ground, with hidden gardens and mysterious predators thriving within their canopy. National Geographic reveals the unexplored environment of the California redwoods in an epic, year-long exploration. Obsessive redwood climber Steve Sillett of Humboldt State University explores their massive crowns, discovering new record-breaking trees, while escaping falling branches and crashing trees in the process. Down below, National Geographic Explorer-in-Residence Mike Fay charts the redwood range to size up the past and future of these primeval trees threatened in 21st century California.