Page last updated at 11:43 GMT, Monday, 12 April 2010 12:43 UK

Earthquake prediction using accelerometers in laptops

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A scientist in California is trying to recruit thousands of people to build a volunteer early warning system by harnessing technology in laptops.

Motion sensors already fitted in computers are being used as seismographs.

The hope is a large network of quake sensors could one day help give warning of impending tremors, as Rajesh Mirchandani reports from California.

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