What's shaking -- literally.As someone who has, for his entire existence, lived atop an earthquake fault and in buildings where "insulation" translates to "put on a sweater," the question posed in the headline has come up dozens of times. Was that the San Andreas Fault -- or Sam and Andreas upstairs? Thankfully, however, the United States Geological Survey long ago produced this Web site that definitively reveals whether you'd have been better off ducking under the bed or thumping a broomstick o
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