"Glass is a Molecular Traffic JamIs glass a liquid or a solid? An article published today in Nature Materials provides evidence that glass is actually more like a 'traffic jam'. It turns out the atoms in a glassy solid would 'like' to form a crystalline solid, or regular structure, but just aren't able to get organized enough. Instead the atoms loosely organize themselves into groups or relationships shaped like an icosahedron."
http://www.treehugger.com/files/2008/06/glass-research-breakthrough-material.php
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