From Live Science:
As the numbers of buried or dead continue to climb from today's 6.9-magnitude earthquake in China, an event so close on the heels of the devastating Chile and Haiti earthquakes, you might wonder if Earth is shaking more lately. Perhaps, scientists say, but not unusually so.
Seismic activity may be higher in recent years than the long-term average, but it's still not out of the normal range, the experts contend.
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