The Sears Tower, an 108-story, 1,451-foot skyscraper in Chicago was completed in 1973. It surpassed the World Trade Center towers in New York to become the tallest building in the world, a title it held for nearly 25 years. The Sears Tower contains enough steel to build 50,000 automobiles.
Willis Tower (formerly Sears Tower), Chicago. |
Margaret Evans became the first mother to give birth on an aircraft flight in 1929. She named the baby Airlene.
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