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90 earthquakes slam California in 30 days as USGS confirms 72% chance of 'Big One' hitting

In California's East Bay, a recent swarm of small earthquakes has pushed long-standing seismic risks back into public view.
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50M face largest West Coast quake threat in modern history—Pacific Northwest residents get just 20 minutes to flee

The Cascadia Subduction Zone last ruptured in 1700, sending a massive tsunami across the Pacific, and geologists say the conditions for another major event are again in place. The new analysis finds ...