A state of emergency has been declred in Santorini, a volcanic island and popular tourist destination in Greece, as an 'earthquake swarm' that began earlier this month continues. Since 31 January, more than 800 tremors with a magnitude of three and above have been recorded.

The Greek island has a long history of earthquakes, but what is causing the recent series of quakes has scientists perplexed.

Multiple earthquakes are rattling Santorini, a volcanic island in Greece, prompting authorities to dispatch rescuers with tents, a sniffer dog and drones, and to shut schools

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ATHENS, Greece (AP) — Schools on four Greek islands will remain closed through next week as earthquakes continue to rattle the region, authorities said Saturday.

Greek islands continue to shake as experts fear stronger earthquakes - The activity has led to a significant exodus of residents and tourists