This Sept. 13, 2011 photo shows a demonstration of an early earthquake warning system at the California Instution of Technology in Pasadena, Calif. This computer model displays a replication of the ... more 
This Sept. 13, 2011 photo shows a demonstration of an early earthquake warning system at the California Instution of Technology in Pasadena, Calif. This computer model displays a replication of the 6.7 magnitude Northridge Earthquake of 1994. The U.S. government has been testing an alert system in California that may someday warn residents and businesses that an earthquake has hit. It's still in the test phase and only about 30 scientists have been hand-picked to receive the warnings. The project is headed by the U.S. Geological Survey based on computer code developed by the California Institute of Technology and University of California, Berkeley. (AP Photo/Reed Saxon) less 
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Associated Press | Photo By Reed Saxon
Tue, Sep 20, 2011 2:31 AM EDT