All that mining and trucking rock around was expensive, even though the basic idea, heating the rock, has always been very simple, so simple that you can even do it at home, as NPR's technology reporter Nell Boyce explains.

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Not content with the basic black concert T shirt, the Stones are moving into upscale souvenirs--Rolling Stones Rock wear--to be sold at the concert sites when possible, but also in retail outlets like Macy's, J.

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Ms Knight said the banks supported the basic framework of the tripartite agreement but that it had clearly been "found wanting" during the Northern Rock crisis.

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