John Alexander brings in his cipher machines, including the German Enigma. We attempt to encipher a simple message using it.
John also sets a code to be cracked by the end of the programme. And yes, after much scribbling, it does work!
Author and journalist Simon Singh tells us how the science of encryption has evolved through the centuries to the current day. Just how safe is your information?
Frank Salzgeber, head of technology transfer at the European Space Agency, tells us why space exploration is still important. He also looks at the application of real-time 3D data for a motor racing game.
One day you could find yourself pitting your virtual driving skills against Lewis Hamilton as he competes in a Formula One race.
Nell Boase, Ian Sample and James Randerson are also in the pod for our last recording in our current studios.
ADVISORY: a pen and paper may come in handy.
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