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Why Doesn t the Willis Tower Topple Over?

4,720 विचारों· 10/19/23
Smithsonian Channel
Smithsonian Channel
1,606 ग्राहकों
1,606
में Discovery

Chicago is home to one of the tallest buildings in the world: the Willis Tower. So tall that on a windy day, the topmost floors can sway as much as three feet. But what keeps it from falling?...

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