For help, we turned to StarMine, a San Francisco research outfit that analyzes earnings estimate data collected by Thomson First Call.

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Drivers had originally been advised to call police to arrange for cars to be collected under supervision.

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The guidelines call for people to be given more information about what data are collected about them and to have some control over how it is used.

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But the safety of beaming it back--proposals call for converting the radiated energy into a narrow microwave beam, which would then be collected and converted into electrical energy on earth--makes many people uncomfortable.

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