WARSAW, Poland -- Stanislaw Lem, a popular science fiction writer whose novel "Solaris" was filmed twice, died Monday in his native Poland, his secretary said. He was 84. Lem died in Krakow, Wojciech Zemek told The Associated Press. Zemek did not give other details or the cause of death, citing only Lem's advanced age. Lem was one of the most popular science fiction authors of recent decades to write in a language other than English, and his works were translated from Polish into more than 40 other languages. His books have sold 27 million copies. His best-known work, "Solaris," was...