This handout photo provided by NSIDC, University of Colorado, taken in Oct. 

This handout photo provided by NSIDC, University of Colorado, taken in Oct. 2003, shows Emperor penguins and researchers working on Antarctic sea ice. The ice goes on seemingly forever in a white pancake-flat landscape, stretching so far it just set a record. And yet in this confounding region of the world, that spreading ice may be a cock-eyed signal of man-made climate change, scientists say. (AP Photo/NSIDC, University of Colorado)
Associated Press
This handout photo provided by NSIDC, University of Colorado, taken in Oct. 2003, shows Emperor penguins and researchers working on Antarctic sea ice. The ice goes on seemingly forever in a white pancake-flat landscape, stretching so far it just set a record. And yet in this confounding region of the world, that spreading ice may be a cock-eyed signal of man-made climate change, scientists say. (AP Photo/NSIDC, University of Colorado)
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