As Unbreakable as … Glass? – NY Times

CHICAGO — To truly appreciate how glass can be used structurally, make your way to 233 South Wacker Drive in downtown Chicago. More precisely, make your way 1,353 feet above South Wacker, to the 103rd floor of the Sears Tower. With new technology, builders are imagining structures made entirely of glass.

For the follow this link: http://www.nytimes.com/2009/07/07/science/07glass.html

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