California hasn't seen a ground-rupturing earthquake in 100 years. That's unprecedented.
Earthquakes may be dumping millions of tons of carbon into the Earth's deepest cracks. And scientists aren't sure what that means.
The earthquake struck 8 miles (13 kilometers) north of Anchorage, prompting a tsunami warning.
Yes, California will have a big earthquake, but the chances of "the big one" happening now didn't suddenly increase.
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