Sept. 11

On the morning of Sept. 11, 2001, two jets streaked through the clear blue sky over lower Manhattan into the towers of the World Trade Center. This photo was taken near the site on the morning of Aug. 11, 2016. At right, the new Freedom Tower. (Kevin Krajick)

A Morning That Shook the World: The Seismology of 9/11

Seismologist Won-Young Kim heard the first reports of the World Trade Center attacks in his car as he drove to Columbia University’s Lamont-Doherty Earth Observatory, on the west bank of the Hudson River 21 miles north of the attacks. Soon, he was inundated by calls from government officials and reporters. In the initial chaos, it was unclear exactly what had hit, and when; had the seismographs picked up anything?

by |September 6, 2016