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Its about an ancient city and its secrets

"The Devil We Know" tells the story of the Devil as told through his dark manifestations in art, music and popular culture throughout history.

Imagine a world where dinosaurs still walk the earth. A world where the Germans won World War II and you are president of the United States. Imagine a world where the laws of physics no longer apply and where infinite copies of you are playing out every story line of your life. It sounds like a plot stolen straight from Hollywood, but far from it. This is the multiverse. Until very recently the whole idea of the multiverse was dismissed as a fantasy, but now this strangest of ideas is at the cutting edge of science. And for a growing number of scientists, the multiverse is the only way we will ever truly make sense of the world we are in. Horizon asks the question: Do multiple universes exist? And if so, which one are we actually in?

With the help of a team of experts and the latest in 3-D scanning technology, Alexander Armstrong, along with Dr Michael Scott, explores the hidden underground treasures that made Rome the powerhouse of the ancient world.

In the crucible of World War II, Germany's most brilliant scientists raced to create an arsenal of terrifying new weapons of mass destruction, even an atomic bomb. Before the war ended, they produced a series of technological firsts that were the basis for many modern day air and spacecraft. This documentary highlights the inventions of Wernher von Braun, Werner Heisenberg, and many others.

During the Second World War, the allies' key objective was to crack the German army's encrypted communications code. Without a doubt, the key player in this game was Alan Turing, an interdisciplinary scientist and a long-forgotten hero.

Artificially intelligent machines are taking over and influence our everyday lives. The world's brightest computer programmers are building brighter machines by reverse-engineering the brain and inventing completely new kinds of computers with greater speed and processing power. NOVA Wonders looks at how far we've come and where machines are headed as their software becomes ever more...cerebral.

The award-winning team behind Penguins - Spy in the Huddle use hidden cameras to go into the heart of the dolphins' world, offering the chance to encounter dolphins up-close.

Following the cosmologists who are attempting to map the universe, and beyond.

This IMAX shot documentary focuses on primates and birds of the Inle Lake area of the Shan state of Myanmar.

Archaeologist Ella Al-Shamahi and actor Andy Serkis bring the prehistoric hominids 'back-to-life' through animation, uncovering some surprising similarities to modern humans.

Scientists genuinely don't know what most of our universe is made of. The atoms we're made from only make up four per cent. The rest is dark matter and dark energy (for 'dark', read 'don't know'). The Large Hadron Collider at CERN has been upgraded. When it's switched on in March 2015, its collisions will have twice the energy they did before. The hope is that scientists will discover the identity of dark matter in the debris. The stakes are high - because if dark matter fails to show itself, it might mean that physics itself needs a rethink.

David Attenborough takes a stark look at the facts surrounding climate change in today's world, detailing the dangers we are already having to deal with and future threats, but also the possibilities for prevention and radical political, social and cultural change.

Go beneath the surface and meet Africa's river giants, the hippos. Discover an unexpected side of these aquatic mammals that can't even swim as hippos protect their families, face their enemies and suffer in a drought. Narrated by David Attenborough.

What lies beneath the mythical triangle? With the aid of data from sophisticated sonar surveys, National Geographic explores what the ocean floor looks like below the Bermuda Triangle.

Scientists and film makers take us to the bottom of the Great Lakes and show us what the bottoms are like and go back in history when they formed.

NASA's New Horizons' epic quest as the spacecraft completes its flyby, capturing first-ever images of Pluto and its moons.

Using the very latest in drone and aerial photographic technology, tour across countries and their seasons, getting a unique view from above.

'Hidden India' is a 3 part BBC series bringing out the unexplored side of natural India to the outside world, with each episode covering various facets of India like its rivers, mountains and vibrant wildlife.

Maya legend tells us that there is a hidden underground cave below Chichen Itza, now high tech archaeologists are here to find the buried truth.

We follow a pack of wolves on Ellesmere Island, in Canada's far north, as they struggle to raise their pups in the brief arctic summer. Hidden in her den, the alpha female of the pack gives birth to a new generation. Time is of the essence: her pups need to grow quickly and they have much to learn if they are to survive the merciless winter ahead.