Santorini's earthquakes are intensifying as a rare earthquake swarm continues to rattle the Mediterranean's Aegean Sea. The ...

Experts said we see earthquakes like the one that hit Monday only once every several years or so, and when we see something this strong, we can feel it for miles.

Experts from UNH explain how rare the 3.8 magnitude earthquake was and the likelihood of significant aftershocks.

However, he noted that the earthquakes were "unusual." "The problem with this event is that we've just seen earthquake after earthquake after earthquake," Pyle said. "It's all underwater, and so it's ...