(FILES) This photo taken on November 16, 2009, at the Food and Agriculture Organization (FAO) headquarters in Rome, shows the 1986 Nobel laureate for medicine, Rita Levi Montalcini of Italy, attending the opening session of a World Summit on Food Security. Montalcini, the oldest surviving Nobel prize laureate, who was known for her work on neurons and brain development, passed away on December 30, 2012, according to the Italian news agency ANSA. AFP PHOTO / POOL / PIER PAOLO CITO (Photo credit should read PIER PAOLO CITO/AFP/Getty Images)
