The Tallest Tower

After 9/11, can engineers build a safer tall tower? The tallest skyscrapers today are built outside the U.S., as bustling economies, scarcity of land, and expanding populations have made skyscrapers a necessity. In this report by "Building on Ground Zero" producer Larry Klein, hear Leslie Robertson, the structural engineer behind New York's World Trade Center, describe the safety features of his latest project, the World Financial Center in Shanghai, China. When the building is finished in 2008, it will be over 1,600 feet tall. The report was edited by NOVA online's David Levin.

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© | Created August 2006