Bitcoin is a digital currency that isn't regulated by any kind of central authority. The structure which allows this decentralisation is called blockchain. But how, and how well, does it work?
Can you encode a message so that errors in transmission are automatically corrected?
A quick look at the role of mathematics in communication — from making and breaking codes to making sure messages arrive intact.
A team of computer scientists has found a weakness in the world's most popular anonymity service.
Marcus du Sautoy talks about football, cryptography, and numbers.
The universal machine is a musical about Alan Turing, the mathematician and WWII code breaker who was convicted of homosexuality in the 1950s, chemically castrated as a result, and died young in mysterious circumstances. How do you turn such a story, and the maths in it, into a musical? We talked to writer and director David Byrne, Richard Delaney, who plays Turing, and Assistant Director Natalie York.