The much touted film Avatar finally reaches the screens, depicted a world heavily relied on for its creation on computer generated imagery. Jon Landau, the producer of Avatar, joins Digital Planet to reveal some of the digital innovations behind the film.

Activists and campaigners are increasingly turning to digital technology and social media platforms to get their messages across. A new documentary called "10 Tactics for Turning Information into Action" provides a handbook in how best to disseminate their ideas. But, as Colin Grant reports, the film makers are also keen to stress the fact that these new digital tools present opportunities but also, sometimes, hidden dangers.

Andy Hopper, a computer specialist at Cambridge University in England has spent many years researching the nature of computing an energy consumption. He joins Gareth Mitchell to discuss his group's plans for computing for the future of the planet.

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28 minutes

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Wed 16 Dec 2009 01:32 GMT