Poland's President Bronislaw Komorowski (R) and his wife Anna Komorowska (L) pay tribute at the tombs of Polish-born physicist Marie Curie and her husband French physicist Pierre Curie during a visit to the Pantheon in Paris May 7, 2013. Poland's President Komorowski is on a two-date state visit to France. REUTERS/Gonzalo Fuentes (FRANCE - Tags: POLITICS)