Professor Marcus du Sautoy explores why we are driven to measure and quantify the world around us and why we have reduced the universe to just a handful of fundamental units of measurement. He tells the story of the metre and the second - how an astonishing journey across revolutionary France gave birth to the metre, and how scientists today are continuing to redefine the measurement of time and length, with extraordinary results.

Carlsbad Caverns are located in the Chihuahuan Desert of southern New Mexico, within the Carlsbad Caverns National Park. There are more than 100 caves. The Natural Entrance is a path into the namesake Carlsbad Cavern. Stalactites cling to the roof of the Big Room, a huge underground chamber in the cavern.

Comet ISON can well be the brightest and most spectacular comet for a generation. It appeared above the eastern horizon from December 2013 as a glorious streak across the sky. ISON has been travelling towards the sun for ten thousand years and will make only one orbit through its corona before disappearing off into the outer solar system.
But as well as providing a great spectacle, ISON's tail of vaporised gas and water, hundreds of millions of kilometres long, will give insights into some of the greatest mysteries of science; it will help explain the origins of the solar system, whether earth's water was delivered on comets and even whether we are alone in the universe.

In Los Angeles, a remarkable experiment is underway; the police are trying to predict crime, before it even happens. At the heart of the city of London, one trader believes that he has found the secret of making billions with math. In South Africa, astronomers are attempting to catalogue the entire cosmos. These very different worlds are united by one thing - an extraordinary explosion in data. Meet the people at the forefront of the data revolution, and reveals the possibilities and the promise of the age of big data.

A unique feature music documentary celebrating a rock 'n' roll icon: Bruce Springsteen. Working with the filmmakers, Springsteen's fans have helped create a film that reflects on their personal insights and experiences to explore what this timeless artist means to them. Their stories are at times touching, at times humorous, at times extraordinary and they all come from the heart.
Combined with previously unseen archive footage of performances throughout Springsteen's career, this is a film by the fans and for the fans created with the full support of Bruce Springsteen.

A feature-length documentary based on LT Michael Murphy's life of honor, courage and commitment, as told by his friends, family and teammates. Michael was raised in Patchogue, New York, attended Penn State University and then joined the U.S. Navy to serve in the SEAL Teams. Well-known for his selflessness, Michael gave his life for his men in 2005 and was posthumously awarded the Congressional Medal of Honor in 2007. His legacy now lives on in this moving portrait of a real American hero.