Previous Photo
Photo 19 of 20
Next Photo
Begin slide show
In this March 21, 2012 photo, University of Pennsylvania sophomore Mike Mirski, 19, of Naperville, Ill., wears sound dampening ear muffs as he demonstrates his memory techniques at the University of Pennsylvania, in Philadelphia. Mirski is on the competitive memory team at the school. (AP Photo/Alex Brandon)
Caption: In this March 21, 2012 photo, University of Pennsylvania sophomore Mike Mirski, 19, of Naperville, Ill., wears sound dampening ear muffs as he demonstrates his memory techniques at the University of Pennsylvania, in Philadelphia. Mirski is on the competitive memory team at the school. (AP Photo/Alex Brandon) Album ID: 1438574 Photo ID: 40911783