Are Scientists Ready To Predict California Quakes?
Description:In the future Californians may get a warning before an earthquake starts to shake beneath them. 20- years ago the 6.7 magnitude Northridge earthquake killed 57 people and injured 9,000 more. It came as a complete surprise. Cal Tech, U.C. Berkley and the U.S. Geological survey are testing an earthquake early warning system. It relies on sensors placed around the state that can detect the tiniest vibrations, pinpointing when an earthquake hits.(1:51)