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U.S.-born Sister Dorothy Stang, a member of the Sisters of Notre Dame de Namur, is pictured in a 2004 file photo in Belem, northern Brazil. The nun was 73 when she was murdered Feb. 12, 2005, on an isolated road near the Brazilian town of Anapu. She had lived in the country for nearly four decades and was known as a fierce defender of a sustainable development project for the Amazon forest. (CNS/Reuters)