People jog in the early morning fog, in Allahabad, India, Monday, Nov. 21, 2011. Dense fog over parts of north India Monday caused disruption of rail services with scores of trains arriving here ... more 
People jog in the early morning fog, in Allahabad, India, Monday, Nov. 21, 2011. Dense fog over parts of north India Monday caused disruption of rail services with scores of trains arriving here several hours behind schedule, according to PTI. (AP Photo/Rajesh Kumar Singh) less 
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Associated Press | Photo By Rajesh Kumar Singh
Mon, Nov 21, 2011 2:14 AM EST