'Angel of 9/11': Steel visage tricks the eye — and touches the heart
Monday, December 2, 2013 - 19:30
in Mathematics & Economics
From the right angle, construction workers at the National September 11 Memorial and Museum at New York's ground zero can make out a sad-looking face that's been dubbed the "Angel of 9/11," seemingly emerging from the twisted steel of a girder that was hit by the first hijacked plane.