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The Giant, Underestimated Earthquake Threat to North America The enormous fault off the coast of the Pacific Northwest has been silent for three centuries. But after years of detective work, geologists have discovered that it can unleash mayhem on an epic scale. by Jerry Thompson

Courtesy Chris Goldfinger Just over one year ago, a magnitude-9 earthquake hit the Tohoku region of northeastern Japan, triggering one of the most destructive tsunamis in a thousand years. The Japanese—the most earthquake-prepared, seismically savvy people on the planet—were caught… Read More ›