Time Lapse Video Skyscraper At Ground Zero

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NEW YORK, NY. (CNN) - Construction at ground zero is moving along for the Freedom Tower and now a new view is giving us a look at the progress.  Here is a time lapse of the effort from the beginning.  The skyscraper is being built at the pace of about one floor per week.

The port authority plans to open the building in late 2013.

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