Article Photos: Midwest bundles up as bitter cold grips region



  Fog forms over Lake Superior on Monday, Jan. 21, 2013, along the Duluth, Mich. shoreline as the area experiences subzero temperatures. (AP Photo/The Duluth News-Tribune, Bob King)

Fog forms over Lake Superior on Monday, Jan. 21, 2013, along the Duluth, Mich. shoreline as the area experiences subzero temperatures. (AP Photo/The Duluth News-Tribune, Bob King)