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CORVALLIS, Ore. – Researchers at Oregon State University say they’ve solved the mystery of why Mount St. Helens is located outside the main line of the Cascade Arc of volcanoes. Using clear images of ...

Some of the clearest, most comprehensive images of the top several miles of the Earth's crust have helped scientists solve the mystery of why Mount St. Helens is located outside the main line of the ...

Picture a volcanic eruption: fiery lava and smoke billowing skyward as a towering mountain empties its over-pressurized belly of a hot meal. At least, that’s how most of us think it works. So you can ...