Photo from the 1893 Columbian Exposition by Dr. Anthony Paustian Author of  A Quarter Million Steps Chair, 2020  International Space Development Conference National Space Society REPRINTED WITH PERMISSION ©2019  Anthony D. Paustian Whenever I visit Chicago, my favorite attraction is the Museum of Science and Industry. The  beautiful , massive building the museum calls home was once called the Palace of Fine Arts, and is now the last remaining structure of the Chicago World’ s Columbian Exposition  that was held there in 1893. World’ s Fairs (or  Expositions and Exhibitions ,  as they were also called) were long, multi-month events popular from 1851 to the 1960s. In a single location, they showcased and celebrated the world’s new technologies and inventions, scientific advancements, cultural contributions in art, and astonishing curiosities. They combined the enterprise of a trade show with the atmosphere of a carnival, which produced an effect that not only entertai