It has eight sides, which makes it a scientific "abomination," according to chemist Thomas Koop. hide caption

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Paul Vernon/AP

Antarctica's Larsen Ice Shelf is one of the areas the Operation Ice Bridge is studying. Jim Ross/NASA hide caption

itoggle caption Jim Ross/NASA

Melting at the base of this Texas-sized ice pack in the Amundsen Sea off Antarctica could lead to significant ocean level rise in the long term. This image of the ice shelf was taken on the first flight of Ice Bridge from an altitude of 20,000 feet. NASA hide caption

itoggle caption NASA

This retinal prosthesis has been implanted in the eyes of 32 patients. The device receives wireless data from the camera which it then translates into electronic signals that are sent to the brain, restoring sight. Courtesy Second Sight Medical Products, Inc. hide caption

itoggle caption Courtesy Second Sight Medical Products, Inc.