How millions of phones get early notice of California’s biggest quakes
Your phone could now give you an up-to-60-second warning when a big earthquake is about to hit
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How millions of phones get early notice of California’s biggest quakes
Washington Post
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How millions of phones get early notice of California’s biggest quakes
Want to know when an earthquake might hit? There's an app for that! (Video: Monica Rodman/The Washington Post) Known as ShakeAlert,..
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