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Electricity from the air - Drayson's big idea

Free energy from the air. It sounds like a fantasy but that is what entrepreneur Lord Drayson has just unveiled at London's Royal Institution.

30 September 2015
Rory Cellan-Jones Technology correspondent

Google's driverless car is brilliant but so boring

Dave Lee takes a ride in Google's driverless car but is less than impressed with the experience.

2 October 2015
Dave Lee North America technology reporter