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We tend to think of the universe as consisting of matter and energy, arrayed in space and time. But to a quantum physicist like Vlatko Vedral of Oxford University, all the world is information. There's the information in our books and websites and in the DNA in our cells; but in a sense, the entire universe and its workings are the ebb and flow of information. Professor Vedral discusses quantum information with Quentin Cooper. Where did it all come from? Where is it leading? And how can we tap into it with super-fast quantum computers?