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| | Quicksand Science: Why It Traps, How to Escape (Site not responding. Last check: ) |
 | | Real quicksand is certainly hard to get out of, but it doesn't suck people under the way it always seems to in the movies. |
 | | Researchers in the Netherlands and France studied quicksand, a combination of fine sand, clay, and salt water. |
 | | The reason, explain the study's authors, is that after its initial liquefaction, quicksand's apparent viscosity (thickness or flow resistance) increases. |
| news.nationalgeographic.com /news/2005/09/0928_050928_quicksand.html (476 words) |
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