Scenic exhibit manager Jon Altemus, left, and Mario Armenta put the final touches on a display at the of the Perot Museum of Nature and Science during a media preview in Dallas, Wednesday, Nov. 14, ... more 
Scenic exhibit manager Jon Altemus, left, and Mario Armenta put the final touches on a display at the of the Perot Museum of Nature and Science during a media preview in Dallas, Wednesday, Nov. 14, 2012. The museum set to open Dec. 1 was named for billionaire former presidential candidate Ross Perot and his wife, Margot, after their five children made a $50 million gift in honor of them. (AP Photo/LM Otero) less 
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Associated Press | Photo By LM Otero
Wed, Nov 14, 2012 4:13 PM EST