Twister outbreak, 2nd-deadliest in US history

Tornadoes are pictured moving through Mississippi, in this still image taken from video on April 27, 2011 and released on April 28. [Photo/Agencies]

Specials

Prince William and Kate Middleton married at Westminster Abbey in a royal occasion of dazzling pomp and pageantry.
Best wishes

Xinjiang is a mysterious land of extremes that never falls to fascinate.

Tsinghua University attracts a cohort of foreign students wanting to come to China.