Pope Pius XII, whose papacy covered World War II, likely knew about the Nazi attempt to exterminate Jewish people in the Holocaust as early as 1942, according to a new letter found in Vatican archives. Key points: The letter from a Jesuit priest tells the pope's secretary about 6,000 Polish and Jewish people were being killed in "SS-furnaces" a day The letter from a Jesuit priest tells the pope's secretary about 6,000 Polish and Jewish people were being killed in "SS-furnaces" a day The letter was discovered was made public with the encouragement of Holy See officials The letter was...