Prime numbers, secret messages and quantum teleportation! Marc West explore prime numbers and speaks to Terrance Tao. Ian Woolf and Marc West discuss Quantum technology - quantum entanglement, quantum cryptography and quantum teleportation. News by Marc West -Mobile phones make you vague, -relax for IVF, -why we like drinks that fizz, -batteries made from salty paper. Hosted and produced by Ian Woolf.