Stephen Hawking is the most famous scientist on the planet. But behind the public face lies an argument that has been raging for almost 30 years. Has he been wrong for the last 30 years? Hawking shot to fame in the world of physics when he provided a mathematical proof for the Big Bang theory. This theory showed that the entire universe exploded from a singularity, an infinitely small point with infinite density and infinite gravity. Hawking was able to come to his proof using mathematical techniques that had been developed by Roger Penrose. These techniques were however developed to deal not with the beginning of the Universe but with black holes". Science had long predicted that if a sufficiently large star collapsed at the end of its life, all the matter left in the star would be crushed into an infinitely small point with infinite gravity and infinite density – a singularity. Hawking realised that the Universe was, in effect, a black hole in reverse. Instead of matter being crushed into a singularity, the Universe began when a singularity expanded to form everything we see around us today, from stars to planets to people. Hawking realised that to come to a complete understanding of the Universe he would have to unravel the mysteries of the black hole and its paradoxes

Far from land, where few of us ever venture, is the ocean beyond the boundary of any country. Largely ungoverned, wild, and lawless. Venture into the deep, dark and desolate oceans that are home to an abundance of beautiful - and downright strange - creatures.

The fascinating history of the military force of the Soviet Union. For 70 years, the Red Army was one of the foundations of the USSR, an instrument of fear as well as admiration, a symbol of liberation as well as coercion. While everyone knows that Trotsky's name is attached to its creation, most of its past is made up of military defeats and failures, contrary to the common idea. This documentary explores its history, combining epic narrative and deconstruction of the myth.

To survive, animals need somewhere to live, a place that provides the necessities of life, shelter from the elements and a refuge from enemies. Good homes are rare and competition can be intense – finding a home is one thing, but defending it is quite another.

Nicholas II abdicates, and civil war erupts. In May 1918, a year after the revolution, the Bolsheviks sent Anastasia, Alexei, Tatiana and Olga to join the rest of the family in Ekaterinburg. They're put in the Ipatiev mansion and It's given the name 'The House of Special Purpose.' As pro-royalist forces close in on the house where the Romanovs are imprisoned, the family's fate is sealed.

With the rapid emergence of digital devices, an unstoppable, invisible force is changing human lives: Big Data, a word that was barely used a few years ago but now governs the day for many of us. The real time visualization of data streaming in from satellites, billions of sensors and GPS enabled cameras and smart phones is beginning to enable us to sense, measure and understand aspects of our existence in ways never possible before". This massive gathering and analysing of data in real time is also allowing us to address to some of humanity biggest challenges, including pollution, world hunger and illness, and it is also helping create a new kind of planetary nervous system. But as Edward Snowden and the release of the NSA documents have shown, the accessibility of all this data comes at a steep price. The Human Face of Big Data captures the promise and peril of this extraordinary knowledge revolution.