Scientists track motions of shifting plates using GPS sensors

The Pacific Northwest is a restless place. The ground is being shoved by tectonic plates. Snow-capped volcanoes inflate and deflate in concert with the creep of molten rock. Coastlines bulge as tension builds on an offshore ...

Lessons from the Christchurch, New Zealand earthquake

Details of an earthquake that rocked the largest city in the South Island of New Zealand in February 2011 may transform the way scientists assess the potential threat of fault lines that run through urban centers.

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