Study co-authors Julie Brigham-Grette and Pavel Minyuk collect sediment cores from Lake El'gygytgyn in the northeast Russian Arctic. These samples help scientists better understand the Arctic's ... more 
Study co-authors Julie Brigham-Grette and Pavel Minyuk collect sediment cores from Lake El'gygytgyn in the northeast Russian Arctic. These samples help scientists better understand the Arctic's climate history, dating from 2.2 million to 3.6 mi less 
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LiveScience.com | Photo By Tim Martin
Thu, May 9, 2013 2:30 PM EDT