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
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