'Science of Mudslides' Video Shows Surprising Cause of Deadly Phenomenon
The Huffington Post
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April 2, 2014
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They begin in an instant, often without warning. Many factors can contribute to mudslides, including erosion, fire and heavy rain. The aftermath can be devastating. (The New York Times)

What causes mudslides? That simple question is suddenly a very poignant one, given the deadly landslide that devastated the small community of Oso in Washington state on March 22 - and the answer might not be what you'd expect.

Mudslides often have many contributing factors. Just check out this recent New York Times video (above). It points out that mudslides, or debris flows, can be caused simply by gravity - though they are often triggered by earthquakes or fires.

Read the rest at The Huffington Post

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