|Thursday, Sep 12, 2013 - 6:00 AM
"Ground Zero Supertower"
NOVA examines the new skyscraper rising up 104 stories from the site where the Twin Towers once stood. This update of "Engineering Ground Zero," goes inside the construction of the tower's final floors and the installation of its 800-ton spire and beacon. The show also goes underground to inspect the multi-billion dollar transit center with its sweeping design. G
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