11 Surprising Natural Lessons from Mount St. Helens

Thirty years ago, on May 18, Mount St. Helens lost its top--3.7 billion cubic yards of mountain, to be exact. The peak of the Pacific Northwest icon dropped by about 1,300 feet in a matter of seconds, taking down with it enough trees to build 300,000 two-bedroom houses. Gone, too, were 200 homes, 57 human lives and most of the visible wildlife across 230 square miles. [More]

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