News Main Animals Archaeology Dinosaurs Earth History Human Animal Space Tech   Getty Images |   Cascade Mountain Range Washington state's Cascade Mountain Range is shown in foreground, with the Strait of Juan de Fuca in the middle. Scientists say that so-called "silent quakes" may be building up huge amounts of stress on the Cascadia subduction zone, which runs under these mountains and near the cities of Vancouver and Seattle. | Discovery News Video   « back to article

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