How has skyscraper design changed since 9/11?


Miles O'Brien did a report for PBS NewsHour on how the technology and design of skyscrapers has changed since 9/11. Video here, transcript here.

The World Trade Center collapse was a "stark and stunning" reminder to architects and engineers of the value of using concrete to protect skyscrapers from the ravages of fire. This report was produced in collaboration with the PBS program "NOVA," which ran an hour-long feature here about the specific project which was the focus of this video.