A satellite view of Antarctica is seen in this undated NASA handout photo obtained by Reuters February 6, 2012. Russian scientists are close to drilling in to the prehistoric sub-glacier Lake Vostok, ... more 
A satellite view of Antarctica is seen in this undated NASA handout photo obtained by Reuters February 6, 2012. Russian scientists are close to drilling in to the prehistoric sub-glacier Lake Vostok, which has been trapped under Antarctic ice for 14 million years. REUTERS/NASA/Handout less 
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Wed, May 2, 2012 10:57 AM EDT