When Mount St. Helens erupted earlier this year, it focused the attention of the whole world on the almost incredible destructive forces that volcanos can release. Geologists from around the world congregated at the volcano and NOVA joined the vigil for an in-depth look at the incident and its aftermath.
ستظهر التعليقات هنا بمجرد مشاركة الأعضاء لأفكارهم.
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