Spring snow closes US schools, cancels flights - Article Photos 27/29

Penn State students David Leinbach and Samantha Rosado ride a tandem bicycle to campus along N Allen Street, in State College, Pa., Monday, March 25, 2013. Heavy snow fell throughout Centre County, Monday, causing local schools to be closed and hazardous traveling conditions. (AP Photo/Centre Daily Times, Nabil K. Mark) MANDATORY CREDIT; MAGS OUT