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Airs Tuesday, December 6, 2011 at 9:00 p.m. ET/PT. Check your local listings.

A 6-part series exploring the biggest questions on the frontiers of science.

Watch Monday, February 6th at 7pm on WVIA TV

Endeavour: Nocturne premieres Sunday, July 6, 9pm ET, on MASTERPIECE Mystery! on PBS.

Premiering Sunday, July 6, 2014 at 10/9c on World Channel.

Uncover the secrets of the terrifying weapons Japan sent into war.

A senior DOJ official in a memo said only agents "who acted with corrupt or partisan intent, who blatantly defied orders from Department leadership, or who exercised discretion in weaponizing the FBI" should be concerned.

U.S. officials tell NPR about what they say is a "significant" victory in the war against al-Qaida in Pakistan. A CIA strike on New Year's Day is said to have killed the terrorist organization's chief of operations in Pakistan, along with his top lieutenant. If the U.S. intelligence is true, this is an important development.

Strange unordered packages are showing up on doorsteps across the country. Often, they are the byproduct of an e-commerce scheme to influence search results rankings.