Falling Smoke Stack

This is a slow-motion video of the demolition of a smoke stack (probably from a power plant) on the campus of Drexel University. At the 0:35 second mark, once the stack impacts the ground, you can see a shock wave travel through the glass cladding on the building in the center of the video.



(It helps to view the video in a full screen mode)

Sears Tower's glass ledge

The iconic Sears Tower, in Chicago, has a new feature. Jutting out from the 103rd floor is a new, enclosed glass ledge. It gives an unobstructed view to the ground from 1,353 ft. above. Given the discussion about glass damage, it's only fair to acknowledge some of the interesting uses of glass!

Sears Tower's new 'Ledge' offers visitors far-out views - Chicago Sun Times