Science: Volcanoes Never Really Die

Mount St. Helens may have signaled a new wave of eruptions

When Mount St. Helens exploded with cataclysmic fury in 1980, many Americans regarded it as an isolated example of nature on the rampage. Geologists, however, have long known that the restless mountain was only one of many dormant volcanoes in the American West. Although some have not stirred in tens of thousands of years, there is no assurance that one or more will not erupt again, perhaps in the near future. As scientists say, "There is no such thing as a dead volcano."

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