IMAGE: A map of the earthquakes triggered around the globe within a week of the April 2012 earthquake off the coast of Sumatra (white star). This year’s largest earthquake, a magnitude 8.6 temblor on ...
About 55 earthquakes a day – 20,000 a year – are recorded by the National Earthquake Information Center. Most are tiny and barely noticed by people living where they happen. But some are strong enough ...
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