How the Universe Works

Carl Sagan covers a wide range of scientific subjects, including the origin of life and a perspective of our place in the universe.

Are we finally a step closer to understanding the great unknown and what it may – or may not – hold? Man has always been curious about what is really out there in the vastness of space, and UFO sightings have been reported for years. Now, with video footage of sightings, radar evidence and eyewitness accounts from around the world, UFOs: The Untold Stories (Tuesdays at 8pm from 13th November) provides an in-depth look at the fascinating and disturbing aspects of encounters with the unexplained.

Famed astrophysicist Neil deGrasse Tyson provides clarity for the vision of the cosmos as he voyages across the universe with never-before-told stories that delve into the scientific concepts of the laws of gravity and the origins of space and time.

From the planets to the stars and out to the edge of the unknown, history and science collide in a wondrous yet deadly adventure through space and time.

Professor Brian Cox explores the dramatic lives of the eight majestic planets/worlds that make up our solar system.

A series of short stories about human space exploration.

The breathtaking beauty of some natural sites should not obscure their role as unique ecosystems. Within them, animal species and nature live in harmony. Sadly, their wealth makes them a prime target for men’s greed. The fight to protect them is a relentless one, and the people who lead it have become true heroes of our time.

Vorsicht Verführung

Observational documentary series following auctioneer Angus Ashworth and his staff throughout the process from house viewings to auction day as they travel around the UK looking for antiques and collectables to sell.

A searing indictment of Big Pharma and the political operatives and government regulations that enable over-production, reckless distribution and abuse of synthetic opiates.

With the 00s now firmly in our rear view mirror, the decade is ripe for re-evaluation. From 9/11 to the financial crisis, the decade shows not only a period of turmoil in the United States but its also a golden age when the Internet hadnt been colonized by corporations, when social media was still young and fresh and when it was easy to make money.

Dr Helen Czerski examines the world of sound waves.

Territorio Gravedad

In this two-part series, we take a look at the monumental discoveries underway, specifically surrounding black holes and meteorites. Black holes have been revealed as one of the foundations for the basic conditions of life. Through black holes, life is possible in an infinite number of places in space. We also follow how meteorites brought the basic substances of life to our planet, allowing for its creation. The films describe the latest findings concerning cosmic events in relation to the origin of life, providing a grandiose perspective of what makes life possible.

A group of families learn the charismatic man they had trusted is sperm donor to hundreds — or perhaps thousands — of other children across the world.

Traveling aboard the OceanXplorer, OceanX's state-of-the-art scientific research and exploration vessel, to investigate the farthest frontiers of the world's oceans, 80% of which are entirely unknown. Armed with advanced technology, a hand-picked team of intrepid explorers and scientists, National Geographic Explorers and other ocean experts embark on a global odyssey to solve some of the ocean's greatest mysteries through the lives of its animals and their ecosystems.

Exploring the vital role colour plays in the daily lives of many species.

In emblematic places around the world, Frédéric Lenoir, philosopher, sociologist and writer, goes to meet those who experience a spiritual quest, both religious and secular. A pilgrimage that mixes the voices of anonymous witnesses and personalities such as the Buddhist monk Matthieu Ricard, the apneist Guillaume Néry and the astrophysicist Hubert Reeves.

Dive into the mysteries of some of NASA’s most curious missions and explore stories of engineering achievement and human endurance. Each episode offers first hand testimony from astronauts, NASA mission footage, plus beautifully rendered CGI to bring to life these voyages that reveal unexplained sightings that have dogged many of NASA’s most famous missions.

There's nothing else like it. Chris Packham reveals the epic, four-billion-year story of our home - from its dramatic creation to the arrival of human life... and whatever's next.