Aleks Krotoski and Bobbie Johnson meet a host of digital idealists on this week's programme, including social entrepreneurs in San Francisco like Catapult Design, Inveneo and Architecture for Humanity, who are bringing technological solutions to developing countries.
Plus musician and philosopher Jaron Lanier explains how 30 years at the heart of internet culture have transformed him from a utopian to a virtual pragmatist.
Aleks also tackles the latest headlines from around the web, including the latest on Google and China, as the US government tightens the net around the likely perpetrators, and Microsoft's decision to offer its consumers a choice of web browsers in Europe after an agreement was reached between the software giant and the European Commission.
And in a daring feat of ducking and diving, Aleks fields listeners' feedback about Google's social search golden goose, Vark.com, and asks for listeners' most wanted: who would you like to see at a live Tech Weekly event in London? Answers, please, in the comments below.
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