Article Photos: Snow in Midwest leaves some travelers scrambling 20/34

This photo provided by the Iowa State Patrol shows the scene of a 25-vehicle pileup that killed three people Thursday, Dec. 20, 2012 north of Des Moines, Iowa.  Authorities said drivers were blinded by blowing snow and didnât see vehicles that had slowed or stopped on Interstate 80 about 60 miles north of Des Moines. A chain reaction of crashes involving semitrailers and passenger cars closed down a section of the highway. (AP Photo/Iowa State Patrol)