Article Photos: Spring snow closes US schools, cancels flights 11/29

A tractor sits in a snow-covered field in western Lenexa, Kan, on Sunday, March 24, 2013.  A storm that dumped up to 15 inches of snow on parts of Colorado and Kansas is making its way east, with winter storm warnings and advisories issued for today and tomorrow as far east as Pennsylvania. (AP Photo/The Kansas City Star, Chris Ochsner)