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Step aside iPhone, Blackberry and Android, the mobile operating system Symbian is still the one to beat. Colin Grant reports from this year's Symbian hosted event, SEE in Amsterdam on the battle for Symbian and Nokia to retain prime position in the mobile phone market.

The artist Christian Marclay has made a 24-hour movie called The Clock. It's a remarkable feat of creativity and of editing that took two years to put together. Marclay joins Gareth Mitchell to discuss his video editing around the clock, to create The Clock.

Jason Palmer visits IBM's offices in Zurich where he learns about their plans to build 3D chips to increase the speed and capability of future computers.

Social gaming – and its counterparts, casual gaming and mobile gaming recently converged on the UK capital for the London Games Festival. Angela Saini reports on how, without realising it, everyone is becoming a gamer, or so delegates to the festival would have us believe.