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'Crowdsourced' Smartphones May Detect Earthquakes

Web surfer, music player, email reader... Add one more potential function to your smartphone: earthquake detector. Researchers say that crowdsourcing data from the navigation tools built into most smartphones could provide a lifesaving early warning when an earthquake strikes. Quake-prone regions of Japan, the United States and other countries have large networks of precision sensors that detect ground movements during a tremor.   The equipment is expensive, however. “There...

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