Horizon: The Age of Big Data

Series exploring topical scientific issues. Horizon meets the people at the forefront of the data revolution and reveals the possibilities and the promise of the age of big data. In Los Angeles the police are experimenting, 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 maths and, in South Africa, astronomers are attempting to catalogue the entire cosmos.