Khan, a three-year-old male Bengali white tiger, stands near a pumpkin during Halloween celebrations at the Royev Ruchey Zoo, on the suburbs of Russia's Siberian city of Krasnoyarsk, Oct. 31, 2013.
A participant dressed as a zombie marches during a Halloween event to promote the U.S. TV series "The Walking Dead" at Tokyo Tower.
Indian students wait their turn to perform a mime act during a Youth Festival competition at a university in Amritsar.
An illustration shows the logos of Google and Yahoo connected with LAN cables in a Berlin office. The U.S. National Security Agency has tapped into communications links used by Google and Yahoo to move huge amounts of email and other user information among overseas data centers, the Washington Post reported Wednesday.