NASA image from September 16, 2007 and released on September 21 shows Arctic summer sea ice

 
NASA image from September 16, 2007 and released on September 21 shows Arctic summer sea ice
A NASA satellite image from September 16, 2007 and released on September 21, 2007, shows Arctic summer sea ice. Arctic sea ice melted to its lowest level ever this week, shattering a record set in 2005 and continuing a trend spurred by human-caused global warming, scientists said on September 20, 2007. REUTERS/NASA/Handout. EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS.