A major earthquake hasn't struck any of California's biggest cities in more than three decades, but experts and officials say the so-called "Big One" is a matter of when, not if. And the risk is far ...
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California on high alert? Scientists raise alarm over catastrophic ‘supershear’ earthquakes. What it means
An earthquake with a preliminary magnitude of 4.3 shook parts of California's Bay Area awake early Monday, with many social media users logging on to say they felt it. The tremors struck just before 3 ...
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