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October 10, 2012
National Snow And Ice Data Center photo

This handout photo provided by NSIDC, University of Colorado, taken in Oct. 2003, shows the Antarctic sunlight illuminating the surface of the sea ice, intensifying the effect of the fracture lines. 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.