When a devastating megaquake rocked the region north of Tokyo in March, nobody saw such a huge quake coming. "Japanese scientists are among the world's best, and they have the best monitoring networks," notes geophysicist Ross Stein of the U.S. Geological Survey (USGS) in Menlo Park, California. "It's hard to imagine others are going to do forecasting better. No one group is doing it in a way we'd all be satisfied with."
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