AdvertisementClimate Politics: It's Laugh Lines Vs. 'Not A Joke'October 18, 2012Richard HarrisfacebookEmailThis Sept. 16 image released by NASA shows the amount of summer sea ice in the Arctic, at center in white, and the 1979 to 2000 average extent for the day shown, with the yellow line. Scientists say sea ice in the Arctic shrank to an all-time low of 1.32 million square miles on Sept. 16, smashing old records for the critical climate indicator. (AP)