Petter Northug of Norway skis through the fog during a training session of the Tour de Ski competition in Oberhof, central Germany, Wednesday, Dec. 28, 2011. The cross country tour starts in the ... more 
Petter Northug of Norway skis through the fog during a training session of the Tour de Ski competition in Oberhof, central Germany, Wednesday, Dec. 28, 2011. The cross country tour starts in the Thuringian Forest on Thursday, Dec. 29, 2011. (AP Photo/Jens Meyer) less 
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Associated Press | Photo By Jens Meyer
Wed, Dec 28, 2011 10:03 AM EST