SHELBYVILLE, Ind. - Edna Parker, who once taught in a two-room schoolhouse and became the world's oldest person more than a year ago, has died at age 115. UCLA gerontologist Dr. Stephen Coles said Parker's great nephew notified him that Parker passed away Wednesday at a nursing home in Shelbyville. She was 115 years, 220 days old, said Robert Young, a senior consultant for gerontology for Guinness World Records. Parker was born April 20, 1893 in central Indiana's Morgan County and had been recognized by Guinness World Records as the world's oldest person since the Aug. 14, 2007, death in...