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Uppsala, SWEDEN: Japanese Empress Michiko and Queen Silvia (L) walk to attend a festive dinner at the Uppsala Castle, 23 May 2007, during the the 300th anniversary of the birth of Swedish biologist Carolus Linnaeus who invented the current system of classifying organisms. AFP PHOTO / SVEN NACKSTRAND (Photo credit should read SVEN NACKSTRAND/AFP/Getty Images)

Uppsala, SWEDEN: Japanese Empress Michiko and Queen Silvia (L) walk to attend a festive dinner at the Uppsala Castle, 23 May 2007, during the the 300th anniversary of the birth of Swedish biologist Carolus Linnaeus who invented the current system of classifying organisms.  AFP PHOTO / SVEN NACKSTRAND (Photo credit should read SVEN NACKSTRAND/AFP/Getty Images)