(Source: NASA - The National Aeronautics and Space Administration) According to a NASA analysis of satellite data, the 2015 Arctic sea ice minimum extent is the fourth lowest on record since observations from space began. The 2015 Arctic sea ice summertime minimum is 699,000 square miles below the 1981-2010 average, shown here as a gold line. Credits: NASA/Goddard Scientific Visualization Studio The analysis by NASA and the NASA-supported National Snow and Ice Data Center (NSIDC) at the University of Colorado at Boulder showed the annual minimum extent was 1.70 million square miles (4.41 million square kilometers) on Sept. 11. This year's minimum is 699,000 square miles (1.81 million square...
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