Liz Etmanski (from left) and PLAN co-founders Al Etmanski and Vickie Cammack take a stroll on a beach in Vancouver, British Columbia. Courtesy of the Etmanski and Cammack family hide caption

itoggle caption Courtesy of the Etmanski and Cammack family

House Speaker Nancy Pelosi (D-CA) signs the Education, Jobs and Medicaid Assistance Act at the U.S. Capitol,  August 10, 2010. Alex Wong/Getty Images North America hide caption

itoggle caption Alex Wong/Getty Images North America

Voice blindness, or phonagnosia, is a rare disorder that has to do with how the brain processes voices. iStockphoto.com hide caption

itoggle caption iStockphoto.com