20-11-28 The Lord of the Rings: The Return of the King is a 2003 epic fantasy-drama film directed by Peter Jackson. It is the concluding film in The Lord of the Rings film trilogy, following The Fellowship of the Ring (2001) and The Two Towers (2002). The Lo...

12-07-03 Through an exploration of tree rings and oxygen isotopes, researchers at the University of Pittsburgh are now able to better pinpoint the history of droughts in the arid（干旱的） and semiarid areas of the American West. A paper published in the onl...