10 May 1943. Something is spotted drifting ashore off the coast of Northwest Donegal, Ireland. Something that would change the lives of the local people forever.

In the 1990s, a motley band of teen surfers from the north shore of Oahu brought professional surfing to new heights. But as their stars rose, the competition threatened to tear their group apart.

Without us noticing, modern life has been taken over. Algorithms run everything from search engines on the internet to satnavs and credit card data security – they even help us travel the world, find love and save lives. Mathematician Professor Marcus du Sautoy demystifies the hidden world of algorithms. By showing us some of the algorithms most essential to our lives, he reveals where these 2,000-year-old problem solvers came from, how they work, what they have achieved and how they are now so advanced they can even programme themselves.

In this BBC Four 90-minute special, physics professor Jim Al-Khalili investigates the amazing science of gravity.

A group of male celebrities strip down to raise awareness for prostate, testicular, and colorectal cancer testing and research in this daring two-hour special.

In a small town near China’s North Korea border, a state police station exerts itself as a solicitous caretaker of the locals. As it goes out to catch criminals and punish them too, professionalism fades into the background.

Environmentally friendly electric cars, sustainably produced food products, fair production processes: Hurray! If everything the corporations tell us is true, we can save the world through our purchasing decisions alone! A popular and dangerous lie. In his new documentary film, Werner Boote shows us, together with environmental expert Kathrin Hartmann, how we can protect ourselves. Down with green lies!

A newly produced 43 minute making-of documentary featuring narration by writer/director Bo Arne Vibenius and on camera interviews with: Christina Lindberg (star), Bo Sunnefeldt (stuntman), Lasse Lundgren (stuntman) and Gunnar Palm (actor).

Lucy Worsley gets into bed with our past monarchs to uncover the Tales from the Royal Bedchamber. She reveals that our obsession with royal bedrooms, births and succession is nothing new. In fact, the rise and fall of their magnificent beds reflects the changing fortunes of the monarchy itself.

With aerial footage from 54 countries, HOME is a depiction of how the Earth’s problems are all interlinked.

Australien Skies is a documentary film that explores the sightings of unidentified flying objects and the people who witness them within Australia.

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.