Mercury's first color image released by NASA

Mercury's horizon is seen from orbit by NASA's MESSENGER probe, in this image released March 30, 2011. [Photo/Agencies]

Specials

Construction on the flagship stadium for the 2012 London Olympics was completed Tuesday.

Spanish Queen Sofia laughs as she plays with a panda.

Two donkeys pull a broken-down Land Rover in Shenyang, Liaoning province.