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Planet earth with fault lines and tectonic plates, computer artwork. (Getty Images)

On November 30, thousands of people on the East Coast got a surprising afternoon jolt when a 4.1 earthquake struck Dover, Delaware. People reported feeling the quake as far north as Connecticut and as far south as Virginia. It was a rare occurrence on that side of the U.S., and it sent the hashtag #earthquake trending for a few hours. But if a couple of geophysicists in Colorado and Montana are correct, we might be talking about #earthquakes a lot more in 2018.

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