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Available for over a year

3D television is the talk of the town in Las Vegas at the end of the Consumer Electronics Show. Iranians show increasing ingenuity in using social networking tools to circumvent censorship. Stream UK offers punters a way of uploading films and photos from Iran and relaying it to broadcasters and others on the outside. Helen Clegg reports from Rio de Janeiro as the Brazilian city embarks on plans to introduce electric scooters.