On Monday of this week, an earthquake occurred off the coast of York Harbor, Maine. Monday’s quake had a magnitude of 3.8 and was felt in Massachusetts, New Hampshire, and even Rhode Island! Two days later, an aftershock occurred Wednesday morning six miles southeast of York Harbor, Maine, according to the United States Geological Survey, with a magnitude of 2.0. What exactly is an earthquake and how often do they occur in New England? John Ebel, Ph.D. research scientist from Boston College's Weston Observatory, who studies earthquakes, joined us to discuss!

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