CHICAGO - APRIL 05, 2016: dinosaur skeleton in Chicago O'Hare International Airport. O'Hare is currently a major hub for American Airlines, United Air

- Image ID: RKCNF4
CHICAGO - APRIL 05, 2016: dinosaur skeleton in Chicago O'Hare International Airport. O'Hare is currently a major hub for American Airlines, United Air
Heorshe / Alamy Stock Photo
Image ID: RKCNF4
CHICAGO - APRIL 05, 2016: dinosaur skeleton in Chicago O'Hare International Airport. O'Hare is currently a major hub for American Airlines, United Airlines and Air Choice One.