Google releases a shiny new browser called Chrome this week, which also happens to mark 10 years that the company's been incorporated. We have an assessment. Also, a famous French blogger uproots his family and moves to San Francisco to start Seesmic, a kind of Twitter for video. Then, we hear about the dark world of online poker, and some of the far-out ideas of geoengineering. And we wax lyrical to end the show, with the Large Hadron Collider rap.

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