BBC Horizon: Is Everything We Know About The Universe Wrong?

There’s something very odd going on in space – something that shouldn’t be possible. It is as though vast swathes of the universe are being hoovered up by a vast and unseen celestial vacuum cleaner. Sasha Kaslinsky, the scientist who discovered the phenomenon, is understandably nervous: ‘It left us quite unsettled and jittery’ he says, ‘because this is not something we planned to find’. The accidental discovery of what is ominously being called ‘dark flow’ not only has implications for the destinies of large numbers of galaxies – it also means that large numbers of scientists might have to find a new way of understanding the universe. Dark flow is the latest in a long line of phenomena that have threatened to re-write the textbooks. Does it herald a new era of understanding, or does it simply mean that everything we know about the universe is wrong? .

The Beauty and Complexity of the Mandelbrot Set

A video by doctor John Hubbard discussing the origin, characteristics, and applications of the Mandelbrot set and other iterative sets.

Gravity and Me: The Force That Shapes Our Lives

Professor Jim Al-Khalili investigates the amazing science of gravity. As well sculpting our universe, gravity also affects our weight, height and even the rate at which we age.

Magic Money: The Bitcoin Revolution

What is Bitcoin? With the advent of Bitcoin, the world's first digital currency, for the first time in history money is no longer controlled by banks or governments, but by the people who use it. But where did this currency come from? How does it work? And is it truly the way forward, or just a flash in the pan? Magic Money answers these questions and more as it explores the mysterious origins of Bitcoin, its role in society, and how it could shape the future.

Théorie des ensembles

Made entirely on Roger Wagner's HyperStudio software, Chris Marker explores set theory, using Noah's Ark as an example.

Clouds Are Not Spheres

Until recently geometry was 'cold', incapable of describing the irregular shape of a cloud, the slope of a mountain or the beauty of the human body. With fractal geometry, Benoit Mandelbrot gave us a language for our natural world. In this captivating documentary, the man himself explains this groundbreaking discovery.

Einstein's Universe

A documentary produced in 1979 to celebrate the centenary of the birth of Albert Einstein. Narrated and hosted by Peter Ustinov and written by Nigel Calder.

Window to the Universe

The history and importance of radio astronomy is examined.

The Genius of George Boole

Narrated by Oscar-winning actor Jeremy Irons, The Genius of George Boole assembles academics and industry leaders from across the globe to explore the life and importance of one of the world’s greatest unsung heroes.

Tesla

Meet Nikola Tesla, the genius engineer and tireless inventor whose technology revolutionized the electrical age of the 20th century. Although eclipsed in fame by Edison and Marconi, it was Tesla's vision that paved the way for today's wireless world. His fertile but undisciplined imagination was the source of his genius but also his downfall, as the image of Tesla as a mad scientist came to overshadow his reputation as a brilliant innovator.

The Story of 1

A humor-inflected history of the of the number one, covering military applications in ancient Rome, the measurement of distances in India, and the decimal system created by Leibnitz.

Gravitation - Urkraft des Universums

John Cage: I Have Nothing to Say and I Am Saying It

This 56-minute documentary on America's most controversial and unique composer manages to cover a great many aspects of Cage's work and thought. His love for mushrooms, his Zen beliefs and use of the I Ching, and basic bio details are all explained intelligently and dynamically. Black Mountain, Buckminster Fuller, Rauschenberg, Duchamp are mentioned. Yoko Ono, John Rockwell, Laurie Anderson, Richard Kostelanetz make appearances. Fascinating performance sequences include Margaret Leng-Tan performing on prepared piano, Merce Cunningham and company, and performances of Credo In Us, Water Music, and Third Construction. Demystifies the man who made music from silence, from all sounds, from life.

NOVA: The Great Math Mystery

NOVA leads viewers on a mathematical mystery tour -- a provocative exploration of math's astonishing power across the centuries. We discover math's signature in the swirl of a nautilus shell, the whirlpool of a galaxy and the spiral in the center of a sunflower. Math was essential to everything from the first wireless radio transmissions to the prediction and discovery of the Higgs boson and the successful landing of rovers on Mars. But where does math get its power? Astrophysicist and writer Mario Livio, along with a colorful cast of mathematicians, physicists and engineers, follows math from Pythagoras to Einstein and beyond, all leading to the ultimate riddle: Is math an invention or a discovery? Humankind's clever trick or the language of the universe?

Black Hole Hunters

A team of international scientists attempt to document the first-ever image of a black hole.

The Genius of Leonardo Da Vinci

Janina Ramirez explores the BBC archives to create a TV history of Leonardo Da Vinci, discovering what lies beneath the Mona Lisa and even how he acquired his anatomical knowledge.

A Brief History of Time

This shows physicist Stephen Hawking's life as he deals with the ALS that renders him immobile and unable to speak without the use of a computer. Hawking's friends, family, classmates, and peers are interviewed not only about his theories but the man himself.

Britain's Greatest Codebreaker

Alan Turing is the genius British mathematician who was instrumental in breaking the German naval Enigma Code during World War II, arguably saving millions of lives. Turing's achievements went unrecognised during his lifetime. Instead he ended up being treated as a common criminal, for being homosexual at a time when homosexual acts were a crime. In 1952, he was convicted of 'gross indecency' with another man and was forced to undergo so-called 'organo-therapy' - chemical castration. Two years later, he killed himself with cyanide, aged just 41. Alan Turing was driven to a terrible despair and early death by the nation he'd done so much to save.

Albert Einstein - Comment je vois le Monde

La Fabrique du temps

Who invented time, who invented the clock? Why 1 hour, why 60 minutes, why 60 seconds? Since prehistoric times, man has sought to measure time, to organize social and religious life, to plan food supply... Today we can surf the Internet, geolocate, pay by credit card… All our daily lives depend on time and the synchronization of clocks. The history of the invention of time and of the ways and instruments to measure it is a long story…