Wonderfully nerdy talk by Tim Berners-Lee given at TED about how data has been taken control of by the Open Source Community. At TED2009, Tim Berners-Lee called for "raw data now" -- for governments, scientists and institutions to make their data...

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The world turns on symmetry -- from the spin of subatomic particles to the dizzying beauty of an arabesque. But there's more to it than meets the eye. Here, Oxford mathematician Marcus du Sautoy offers a glimpse of the invisible numbers that marry...