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Over 20 years ago, Mt. St Helens--thought to be dormant--shocked America when it exploded. It is an acidic volcano--the magma beneath is full of volatiles making it highly explosive. A new plug has formed in its throat and is rising. When it blows it will be like uncorking a champagne bottle, releasing pressure below and allowing dissolved gases to escape and explode. The question is...when will it blow again? |
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| Title: | Mt. St. Helens | |
| Air Date: | February 2, 2010 | |
| Runtime: | 60 min | |
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| Version 1 | youtube.com | 6 views | Report Link | ||
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kerfy : drivel.. too bad