National Geographic

Never-before-heard audio tapes recorded with Neil Armstrong during the final years of his life reveal an intimate portrait of this iconic - and famously private - man. Illustrated through previously unseen personal photographs and archival footage, this documentary special takes viewers on an emotional journey into the thoughts and experiences of the first man on the Moon.

In the secluded isolation of Christmas Island, crabs have become the guardians of a lush rainforest kingdom. The robber crab is an unruly king, with a meter-wide leg-span and claws that can open a coconut. As we follow the robber’s life cycle, we learn that crabs are much more than creepy crawlies.

The Channel Tunnel linking Britain with France is one of the seven wonders of the modern world but what did it take to build the longest undersea tunnel ever constructed? We hear from the men and women, who built this engineering marvel. Massive tunnel boring machines gnawed their way through rock and chalk, digging not one tunnel but three; two rail tunnels and a service tunnel. This was a project that would be privately financed; not a penny of public money would be spent on the tunnel. Business would have to put up all the money and take all the risks. This was also a project that was blighted by flood, fire, tragic loss of life and financial bust ups. Today, it stands as an engineering triumph and a testament to what can be achieved when two nations, Britain and France put aside their historic differences and work together.

In this gripping investigation, archaeologist Pepi Papakosta is on a hunt for Alexander the Great's lost tomb, and she makes an extraordinary discovery.

The discovery of Gobekli Tepe 20 years ago changed our understanding of the history of humankind. Now, newly-discovered skull carvings reveal even more about how and why civilized societies developed.

Botswana is a land of extremes, a myriad iconic realms, moulded by powerful forces. Each environment provides a rich setting, imposing its own rules and challenges on the animals that make their home here.

Paris to Pittsburgh brings to life the impassioned efforts of individuals who are battling the most severe threats of climate change in their own backyards. Set against the national debate over the United States' energy future - and the Trump administration's explosive decision to exit the Paris Climate Agreement - the film captures what's at stake for communities around the country and the inspiring ways Americans are responding.

Thanks to intensive excavations, new technology (DNA analysis, 3D volumetric scanners, NASA aerial radar and augmented reality) and the findings of Italian, Peruvian, French and American scientists the film will help us shed light on the mystery that shrouds the strange and puzzling world of the ancient Nasca and Paracas civilizations.

Big-cat expert Boone Smith tracks pumas in Patagonia, but the tables are turned when a big cat starts to stalk him.

Surrounded by the unforgiving Kalahari Desert, the Okavango Delta is a lush, vibrant oasis that pulses with life each year as the great flood rejuvenates the land with the return of water. Witness how incredible animals – like leopards, elephants, lions, hippos and more – adapt to this unpredictable and changing landscape. When the lands are flooded, the Okavango Delta is both a sanctuary and a trap, giving and taking life in equal measure. Then, like a living, breathing ecosystem, the waters soon recede and life becomes about one thing – survival. The fate of the tens of thousands of animals that live in this place of spectacular natural drama is at stake.

A look at NASA's Parker Solar Probe, which launched its mission to explore the sun in August 2018.

An investigation into prehistoric, fossilised human remains found in the Saharan Desert.

The Ark of the Covenant and Noah's Ark are two very different Bible stories with one burning question.

There are men who have become myths, true icons of our time; but an icon, by definition, is surrounded by mystery, unattainable and indefinable.

National Geographic documentary on Martin Luther King Jr. helps drive change in the United States in the face of bitter opposition, not least from opponents within the U.S. government; King is subjected to a fierce campaign of intimidation by J. Edgar Hoover's FBI.

South America is a continent of contradictions, born of fire and carved by the mighty Amazon River. This is a detailed look at the wonders of South America, through its stunning landscapes. With everything from massive glaciers to dry deserts, and everything in-between.

We reveal how a new "treasure map" of the Maya world is transforming what we thought we knew of one of the world most mysterious ancient civilizations.